With so many choices and shows these days, it is hard to find a series with a good mix of everything. I doubt that there would be one that can be called the perfect series. But with certain series seemingly having great potential, it would be such a waste not to make a sequel out of it, right? But do you ever notice this? In the case of anime, many series that get their sequels are usually shorter than their prequel. In the sense that they do not get as much episodes as the previous season and some just match the same number of episodes as before. But mostly sequels tend to get lesser or half the number of episodes from their predecessor. It is hard indeed for a sequel to have more episodes than the prequel due to varying factors (budget, contract, video sales, current viewer sentiments, etc). Rare but there are a handful of them out there.

Therefore listed below are some of the anime sequels with extra episodes. Please note that the list below is only strictly reserved for TV anime series episodes and DOES NOT include OVAs, movies or any kind of specials. Sometimes when you add those, you ‘magically prop up’ the number count.

Anime: K-ON! – 13 episodes (2009).
Sequel: K-ON! S2 – 26 episodes (2010).
Thoughts: Probably one of the more famous animes in this category. Cute high school girls forming a rock band and rocking. Is there any other reason not to produce a sequel twice the number of episodes? Rock bands have never been this moe. Continue to always rock on!

Anime: Yama No Susume – 12 episodes (2013).
Sequel: Yama No Susume Second Season – 24 episodes (2014).
Thoughts: I believe there aren’t as many true mountain hiker lovers in the world. Even rarer if you are both a mountain hiker and an anime lover. Even more so for Japan to celebrate when they make their new public holiday, Mountain Day official and thus you have a TV series doubled not only in terms of episodes but the length of the episode as well!

Anime: Aria The Animation – 13 episodes (2005).
Sequel: Aria The Natural – 26 episodes (2006).
Thoughts: Nice, calming, soothing series… We need more of such animes to detoxify ourselves from all those crap we see. Double the dose of boringness comforting peace and monotony tranquillity. Note though, the third season, Aria The Origination returned back to being just 13 episodes.

Anime: Mahou Shoujo Lyrical Nanoha A’s (2nd season) – 13 episodes (2005).
Sequel: Mahou Shoujo Lyrical Nanoha StrikerS (3rd season) 26 episodes (2007).
Thoughts: I didn’t really continue to see this series. I only have vague memories having watching the first season but I suppose they are one of those magical girls series that are popular to warrant a few seasons throughout the years. Especially when you have popular seiyuu veterans like Yukari Tamura and Nana Mizuki, there is no reason to close the chapter on this series yet. Recently they came out with the fourth season, Mahou Shoujo Lyrical Nanoha ViVid back in 2015 but it only had 13 episodes.

Anime: Noragami – 12 episodes (2014).
Sequel: Noragami Aragoto – 13 episodes (2015).
Thoughts: Probably there were enough fans who donated enough for Yato to have an extra episode for the second season. Don’t laugh. He might be collecting meagre yen coins but he has been amassing enough of it to make a fortune!

Anime: Sayonara Zetsubou Sensei – 12 episodes (2007).
Sequel: Zoku Sayonara Zetsubou Sensei – 13 episodes (2008).
Thoughts: I suppose it still counts even though it is just an increase of 1 stinking episode. Yeah, an episode more worth of despair. Oh, the sequel Zan Sayonara Zetsubou Sensei that came out in 2009 maintains at 13 episodes. Total despair!

Anime: Galaxy Angel Z (2nd season) – 9 episodes (early 2002).
Sequel: Galaxy Angel A (3rd season) – 26 episodes (late 2002).
Thoughts: We can never get enough of the shenanigans of those dumb but lovable military girls. And they do it in a cute and silly way that makes us laugh and don’t mind it all. That is why despite the sudden dip in episodes from the first season (it had 12 episodes if you care to know), a sudden explosion of more episodes to showcase more misadventures that might or might not be related (usually the latter) to their mission. It is just sad the final season, Galaxy Angel X in 2004 was reduced to just 13 episodes.

Anime: Clannad – 23 episodes (2007).
Sequel: Clannad ~After Story~ – 24 episodes (2008).
Thoughts: Dango, dango, dango, dango, dango daikazoku. Was the song too infectious to render a sequel? Hah. Most probably there were lots of Tomoya x Nagisa fans out there that is why they needed to put up another season that is dedicated entirely for this route. By the way, I’m not really a Nagisa fan…

Anime: Girls Bravo – 11 episodes (2004).
Sequel: Girls Bravo Second Season – 13 episodes (2005).
Thoughts: Apparently one season of watching Yukinari being allergic to his harem wasn’t enough. Okay, actually I made that up. But really. A guy who was bullied till he develops some sort of allergies to girls? But we don’t care about all that, do we? Just bring on more harem and fanservice and we’ll be satisfied…

Anime: Hidamari Sketch – 12 episodes (2007).
Sequel: Hidamari Sketch x 365 – 13 episodes (2008).
Thoughts: Cute girls doing cute things. No real plot. Art version. Lovable? Of course. Bring on more sequels. Oddly, only the second season stands as the odd one out with 13 episodes because subsequent seasons, Hidamari Sketch Hoshimittsu in 2010 and Hidamari Sketch Honeycomb in 2012 are reduced backed to 12 episodes each.

Anime: Kanon – 13 episodes (2002).
Sequel: Kanon (remake) – 24 episodes (2006).
Thoughts: I wasn’t sure if I was supposed to include this in but eventually did since the latter version is an expanded remake of the former. I only saw the original version and passed off the remake because I thought it would be more or less the same thing. You can correct me if you want to. Anyway, with Key having an outstanding reputation for making great games with great storyline, it is all the more a good reason why a remake had to be made.

Anime: Wooser No Sono Higurashi: Kakusei-hen (second season) – 12 episodes (2014).
Sequel: Wooser No Sono Higurashi: Mugen-hen (third season) – 13 episodes (2015).
Thoughts: Who would have thought this little yellow mysterious greedy girl-loving rabbit could get an extra episode for its third season. It’s not like Wooser is going to experience some sort of significant life-changing experience, right?!

Anime: Mahoromatic – 12 episodes (2001).
Sequel: Mahoromatic: Motto Utsukushii Mono – 14 episodes (2002).
Thoughts: “Dirty thoughts are bad!”. Yeah, but it didn’t stop them from making more episodes for the sequel, right? And because Mahoro is running out of time to ‘live’, might as well give her more episodes to live her life to the fullest. Yes, a couple of episodes do make a difference for an ex-battle android turned housemaid.

Anime: Oshiri Kajiri Mushi – 20 episodes (2012).
Sequel: Oshiri Kajiri Mushi 2 – 32 episodes (2013).
Thoughts: I didn’t see this anime and would probably never in the foreseeable future just because the art and drawing look so much like it was made for children (in which it is). Wait a minute. A butt biting bug as the protagonist for children’s TV? I know it’s a funny show but take a look at western cartoons for children. They’re all violent, aren’t they? And kids love them! I supposed that is why the increase in episodes for the sequel. Although the third season that aired back in 2014 only had a paltry 10 episodes.

Anime: Sekirei – 12 episodes (2008).
Sequel: Sekirei ~Pure Engagement~ – 13 episodes (2010).
Thoughts: Before there was High School DxD, there was Sekirei. There was harem. There were busty babes and big boobs. There were power fights. And more importantly there was a good story plot that rendered a sequel and possibly more. Hey, at least it got 1 episode increase. Too bad I haven’t heard about a third season for years now…

Anime: Ansatsu Kyoushitsu – 22 episodes (2015).
Sequel: Ansatsu Kyoushitsu S2 – 25 episodes (2016).
Thoughts: Among all the other entries in this list, this is one of the very few series that doesn’t increase by one episode or another cour. Thanks to the relatively odd (even, rather) number of episodes from the first season. And then the second season for a proper ending and closure to everything this series had to offer. Thanks for the life lessons, Koro-sensei!

Anime: Ani Ni Tsukeru Kusuri Wa Nai – 12 episodes (2017).
Sequel: Ani Ni Tsukeru Kusuri Wa Nai S2 – 24 episodes (2018).
Thoughts: An obscure series that not only it got a sequel but a second season that has twice the amount of episodes than its first. I guess we really love our idiot brother. Indeed there is no cure for our dumb brother no matter how many seasons and episodes you put into it. Only more fun.

Anime: Boku No Hero Academia 13 episodes (2016).
Sequel: Boku No Hero Academia S2 – 25 episodes (2017).
Thoughts: A superhero series so great that the sequel had to add another cour for its second season. It also maintained the same number of episodes for its third season a year later. It remains to be seen about its fourth season (yes, it has become this popular and mainstream to warrant another season) but with all the potentials and developments, it is likely it will maintain its current double cour format.

Anime: Shingeki No Bahamut: Genesis – 12 episodes (2014).
Sequel: Shingeki No Bahamut: Virgin Soul – 24 episodes (2017).
Thoughts: Seriously, I never thought this anime would have gotten a sequel that is far more awesome than the already awesome first season. At least not by the way things have ended. Even though in some ways this can be considered as a new series because of the entirely new plotline and new main characters, old ones do make their cameo and the overall lore of the series still remains. So technically still a sequel in my books.

Anime: Wake Up, Girls! 12 episodes (2014).
Sequel: Wake Up, Girls! Shin Shou – 13 episodes (2017).
Thoughts: The single extra episode stems from a special episode that aired midway during the second season. Some called it episode 6.5 but others like me consider it to be just another full episode on its own even if that special episode is live action, behind the scenes and interviews with the casts. It’s not a recap so I guess that counts.

Anime: To Aru Majutsu No Index II – 24 episodes (2010).
Sequel: To Aru Majutsu No Index III – 26 episodes (late 2018).
Thoughts: Oh my. What’s with this huge gap in between the second and third season? And I guess with that long wait means with have slightly a little more episodes to spare thanks to the World War III arc being the longest arc ever in the series. At least in terms of adapted anime. When science and magic clash again after a long while, 2 additional epic episodes are added…

Anime: Mob Psycho 100 – 12 episodes (2016).
Sequel: Mob Psycho 100 S2 – 13 episodes (2019).
Thoughts: I wasn’t really hoping this series to get another sequel but yeah, it did. Seeing out main character is going to explode with his emotions and the imminent threat of Claw trying to take over the world, can an extra episode save the day? Spoilers: He did. Sort of.

More Is Not Always Better
The list above is not meant to be exclusive as there may be others out there. Just that I have not noticed them. Too obscure for me to notice? Also, you may be thinking that this list may have omitted a handful of prominent TV animes. If you’re asking about the likes of One Piece, Fairy Tail, Naruto, Lupin III, Gintama or even Bleach, let me just say that I have omitted long running shows especially those with 3 digits because I feel those series itself may have separated episodes into seasons just for their DVD sales purposes but as far as this series is concerned and a series as a whole, it is still the same single season. Get it? And then there are those with too many spin-offs for their own good like the Pretty Cure series that I’m not sure if it is supposed to be actual sequels, spin-off sequels or just spin-offs under the series. Major headache coming…

Animes with ‘confusing’ seasons are also left out. Particularly the Monogatari Series. Yeah, there are so many stories in there so much so I am not sure which is supposed to be which. So to avoid having brain damage I just omitted this one. Same case for OreImo. Technically the second season had more TV episodes (actually by just 1 episode) but there are a few special episodes after that which I am not really sure if they are TV or OVA or whatever so I left it out. Eventually both seasons had the same amount of episodes. Also left out are those transited from other formats to TV series. A recent example is Houkago No Pleiades. It started out with only 4 ONA episodes before it got adapted into a full 1 cour TV series a few years later. Another confusion surrounding Nanatsu No Taizai’s Seisen No Shirushi and Imashime No Fukkatsu. The former has only 4 episodes and the latter 20 episodes. But many websites listed the latter as the second season although the former isn’t technically an OVA but a TV series. I’m so confused that I decided to leave it out.

Also being left out are those series that split its cours. For example, Shokugeki No Souma. Despite its second season having 13 episodes, its third season has a total of 24 episodes. However it split it to 12 episodes per cour. So I suppose this also confused the hell out of me so I decided not to put it in here. Otherwise the list will be so bloated that people would fall asleep. Haha! Assuming people have such short attention span these days! Not entirely false! The same can be said for Shingeki No Kyojin as its second season had 12 episodes but the third season doubled that although it split it into 2 cours. That’s why I also omitted Sword Art Online – Alicization as it is the longest arc in the series and ‘luckily’ it split into 2 cours. Phew? For the case of Miss Monochrome, the second and third season have 13 episodes each. Despite both cours being shown back to back, they are officially separated as different seasons.

Whether or not having more episodes would make a sequel better all depends on your taste in the shows that you are seeing. Theoretically with extra episodes means extra time means extra content but that doesn’t necessarily translate into something better. Heck, should I do a study if there is a correlation between number of episodes and how good an anime is? Because lately there has been quite a number of sequels failing to live up to its prequel and it is a worrying growing trend. Even so, that has nothing to do with this blog’s topic. Whatever the reasons it may be, I hope you enjoy the animes you watch.