Kagaku Na Yatsura

Choosing which high school club to join can be a daunting task. After all, there are only so many hours in the day, not to mention the power struggle between cyborgs and part canine-females. At least, that's the conundrum that Haruki Komaba finds himself trapped in.

Airi Kuze is a mechanical science master with a crush on Haruki. Ayana Hizuki is a half-dog, half-girl with enormous lactating breasts, and she is a chemical science master who's also fond of Haruki. Unfortunately for Haruki, he accidentally promised to join both clubs and finds himself in the middle of a fierce battle for his membership and, if Airi has anything to say about it, his hand in marriage.

As if things weren't complicated enough, Ayana's perverted older sister Touko has decided to intervene on her younger sibling's behalf, bringing her own brand of sexually charged chemical science into the mix. Haruki's going to have a difficult time deciding on a club. If the girls don't end up tearing each other apart first, that is.

Airi Kuze (久世 愛莉, Airi Kuze)

Voiced by: Kana Akutsu

Airi is an eccentric half-cyborg girl and friends with Haruki Komaba. She views Ayana as her rival. She is the head of the Technological science club.

Haruki Komaba (駒場 遥希, Haruki Komaba)

Voiced by: Junji Majima

A high school boy with two eccentric girl friends. Haruki gets involved in ecchi troubles caused by the two.

Touko Hizuki (緋月 透子, Touko Hizuki)

Voiced by: Kumi Sakuma

She is the older sister of Ayana. She can be Invisible if she wants to. She is the nurse of the school that Ayana, Airi and Haruki attend. She is known for her exaggerated breasts.

Ayana Hizuki (緋月 綾奈, Ayana Hizuki)

Voiced by: Natsumi Takamori

Ayana was an experiment, simple as that. Her “mother” worked a genetics lab and was experimenting with splicing human genes with various animals. After hundreds of failures the first success came out of the combination of a random dog breed and Ayana's mother's own genes. Luckily Ayana's mother had some sense of kindess, as soon as Ayana was old enough to be out in the world Ayana's mother left the little hybrid in the care of her sister and simply asked her to try and give her the closest thing to a normal life she can. Luckily Ayana managed just fine, she just told people she had a rare condition and they seemed to accept her just fine. Like her older sister, she is also well noted for her exaggerated breasts.