Kagaku na Yatsura

is a Japanese manga series written and illustrated by . It was serialized in Akita Shoten's manga magazine Champion Red Ichigo from February 2010 to December 2013, with its chapters collected in six volumes. An original video animation (OVA), produced by Hoods Entertainment and directed by , was released in February 2013.

Story

Haruki Komaba accidentally signs up for the school's Technological Science Club and Chemical Science Club at the same time. The two club's heads, Airi Kuze and Ayana Hizuki, become attracted to him and jealous of the other. They constantly compete to outdo the other and try to seduce Haruki so that he will stay in their club exclusively.

Characters

Haruki is high school boy with two eccentric girl friends. He gets involved in erotic troubles caused by the two as they try to get him to join their respective clubs.

Touko is the older sister of Ayana. She can become invisible at will. She becomes the nurse of the school that Ayana, Airi, and Haruki attend.

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.

Ayana is a genetic hybrid, the first successful experiment combining human genes with those of a dog. Created in a laboratory by her geneticist mother, she was later entrusted to her aunt's care to live a normal life. She integrates into society by attributing her unique appearance to a rare medical condition. Ayana is the head of the Chemical Science Club.

Media

Manga

Written and illustrated by Hideaki Yoshikawa, Kagaku na Yatsura was serialized in Akita Shoten's manga magazine Champion Red Ichigo from February 5, 2010, to December 5, 2013. Akita Shoten collected its chapters in six volumes, released from March 20, 2011, to February 20, 2014.

Volumes

Original video animation

An original video animation (OVA) was bundled with the limited edition of the manga's fourth volume, released on February 20, 2013. It was produced by Hoods Entertainment, directed by , with screenplay by , and character designs by Masaya Nozaki.