Koi Kaze – Anime Review

Japanese Title: Koi Kaze


Similar: Wandering Son


Rumbling Hearts


Watched in: Japanese & English

Genre: Psychological Drama Romance

Length: 13 episodes



  • The ending.
  • Common sense not forgotten.
  • Cliché-free.


  • Thin on content.
  • Lacks relationship scaffolding.

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Genetic sexual attraction (GSA) is the real scientific theory of sexual attraction between two relatives who meet after separation since birth or infancy. GSA forms the basis of Koi Kaze. 27-year-old Koshiro works as a marriage matchmaker, despite incompetence in his own relationships, and an encounter with a teenage girl rekindles hope of love within him. However, Nanoka reveals herself as his sister, not seen since their parents divorced long ago, each taking custody of one child. She will be staying with him and their father for school from now on. Sexual tension bubbles under one roof.

Where incest most often plays a comedic role in anime (Ouran High School Host Club), or as drama so laughable it may as well be comedy (Vampire Knight, Please Twins), Koi Kaze is one of the few that takes a serious angle and knows what that requires. Most notably, people actually bloody question the morality of the relationship. Thank the anime gods – some sense! When the mother insinuates she would kill Koshiro if he does anything to her daughter, I sat up, impressed the writer included an authentic reaction to the thought of one’s children getting amorous. This is especially important with the 12-year age gap between the two.

The relationship spawns in a time of heartbreak for both. Their vulnerability and desperation for comfort coupled with GSA, and our general attraction to people who look similar to ourselves, sells us on the inception of the taboo path they tread. Many writers don’t realise how biologically difficult it is for an incestuous union to form, so the setup is crucial. Furthermore, they don’t dive right into each other’s pants. Koshiro hates his feelings and himself, lashing out at Nanoka, while she, the younger of the two, doesn’t know what to make of any of this. I’m glad this wasn’t a case of “This is wrong, but take me anyway!” The story has conflict and inner turmoil.

Where Koi Kaze falls flat is beyond the setup. Alright, an unfortunate concoction of circumstances and lust triggers this relationship, but what keeps it going? For a moment, think of this as a normal relationship – no taboo, no age gap, just two people yearning. What interests them beyond the initial burst of endorphins? Act 2, the middle development of their relationship is lacking and thin of content. He’s a dick and a loser while she’s emotionless. This doesn’t make them bad characters, of course, – we’ve all met such people – but if this were a normal relationship, would they remain or even become a couple? I don’t think so.

That said, if the story had gone longer, maybe we would have seen them realise they have no interest in each other beyond lust. It would be intriguing to see the slow destruction in their relationship, which the sober ending hints at. If the writer had included this stage – delete act 2, move the current solid act 3 up to 2, followed by new act 3 – Koi Kaze could have been great.

This anime is decent, regardless. I am surprised to see genuine thought and effort go into such a complex subject. It’s worth a look for being something different.

Art – Medium

Average art and animation – many static shots with mouth movements only. The white mouths look odd, or have I become too used to black mouths? Every shot seems a beat too long. Each line has a beat too much before the next.

Sound – Medium

Nanoka is rather flat in Japanese. Give some emotion! The dub is fine, though the script hasn’t much opportunity for range. The music is appropriately melancholic.

Story – Medium

Two siblings estranged by their parents’ divorce reunite and develop feelings for each other against better judgement. Despite lacking act two content, Koi Kaze’s serious take on a taboo relationship is solid.

Overall Quality – Medium

Recommendation: Try it. If the subject matter and melancholic romance interests you, then give Koi Kaze’s taboo story a chance.

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Awards: (hover over each award to see descriptions; click award for more recipients)

Positive: None

Negative: None


3 thoughts on “Koi Kaze – Anime Review”

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