Final Review: Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne!

DISCLAIMER: Anime reviews on this blog will attempt minimal to no spoilers unless other noted. If a review seems dull or shallow, it’s because I’m trying to make sure not to go into too detail for those who are actually interested in the show before or after reading the review or those who have yet to finish the title. If you want further details, there are usually tons of reviews that can be found elsewhere on the internet. Furthermore, anime reviews in general are the sole opinion of the author writing it and thus differ across the users. There is no such thing as a “right answer” only a majority agreement. You are free to have your own opinions and thereby free to state and/or argue/debate in the comments section below or on the Fansub TV Forums. The review is not necessarily meant to serve as a recommendation but rather a personal opinion of having completed the series.

Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne! (or OniAi for short) is based off a light novel of the same name. The story follows the daily life of the Himenokouji twins who are finally reunited 6 years after the death of their parents. Since then, Akiko has developed an incestuous fondness for her brother, Akito. Unfortunately the feelings don’t reciprocate. While they now live together, they also live with three (soon 4) other girls that attend the same school. Akiko sees them as competition and attempts to pursue her brother more to reciprocate her feelings. OniAi premiered during the Fall 2012 anime season and was simulcasted by Funimation.

As this series is over a season old, I’ll keep this brief. The story is about a girl who is obsessed with her brother to the point of incest love. Of course, the brother doesn’t see it that way. The show quickly turns into your generic romantic comedy and nothing more. The characters aren’t very interesting nor are their models anywhere remotely unique. The recent spike of incest titles since 2010 has really caused the genre to be over abused and of course beaten to death. The story, simply doesn’t move much as usual for these type of titles with unfinished sources. Also, overly generic and expected finale.

Art is basic overall as is animation. Character designs all use the same design.

OP/ED mostly are a play on sex puns. Nothing really special. Background music is average. Sound effects are hardly noticeable. Seiyuu is bland though Ibuki Kido as Akiko was quite interesting given the guhehehe laugh.

Enjoyment? Pretty much your generic harem title. Character development does pick up in the later episodes, but seeing as the characters themselves are not that interesting, I can’t really say it was anything spectacular to learn about their past. It tries very hard to be funny with the constant sexual jokes but we already have something called Seitokai Yakuindomo for that. Furthermore, the incest aspect isn’t really even there. If anything, OreImo is closer to that by a mile and that’s already stretching the “incest” theme. NakaImo is better despite both shows being generic and Yosuga no Sora and Kiss x Sis are of course the cream of the crop along with the classic Koi Kaze.

Overall a bad show. Not much to say here except go watch something else. It may have been an okay show at best in the mid-2000s but the incest genre is now just getting beaten like a dead horse and of course the harem/romantic comedy genre even more so. OniAi is an example of going the wrong direction for a genre. Ideally, genres should improve over time but OniAi does the exact opposite, especially following up from NakaImo earlier in the year.


Story and Character:

  • Premise (0/1): Boring
  • Character Personalities (0/1): Lame
  • Character Development (1/2): Certainly there.
  • Character Usefulness/Presence (0.5/2): Presence is there. Usefulness seems close to nil
  • Pacing: (1/1): I can’t really complain about pacing for a show without much direction to begin with.
  • Reasonable/Plausible (2/2): Pretty sure the show is as plain as something can get
  • Conclusion (0/1): Generic
  • Total: 4.5/10

Art and Animation:

  • Backgrounds (1/2): Average
  • Character Designs (0.5/2): Hardly unique if at all
  • Fluidity (1/2): Basic
  • Visuals/Special Effects/Flashiness (1/2): Basic
  • Art and Animation “Expectation” (0.5/2): Disappointing from Silver Link.
  • Total: 4/10

Sound and Music:

  • OP/ED/Insert Themes (0.5/3): Uninteresting though fitting for the show.
  • Background Music (1/2): Average
  • Sound Effects (0.5/2): Hardly noticeable
  • Seiyuu (1/3): Bland except Ibuki Kido
  • Total: 3/10


  • Amusement (0/2): Non
  • Weekly/Next Episode Anticipation (0/2): None
  • Presentation: (0/2): Feels episodic but at the same time not.
  • Re-watchable (0/1): Nope
  • Recommendation (0/2): Koi Kaze, Kiss x Sis, OreImo, and Yosuga no Sora. Seitokai Yakuindomo if you like that type of comedy.
  • Value (0/1): If you think the incest taboo hasn’t been done before, check the above titles before you say anything else, especially the former 4.
  • Total: 0/10

Preliminary Score: 5/10

Final Score: 3/10

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