A young, well endowed teacher who is Aoki's colleague and friend at work. She tries to care for Aoki as he is still new to the job, and seems to have a crush on him, as she has asked him out on several occasions, only to be interrupted every time by some incident, usually involving Rin.

3rd grade teacher Aoki Daisuke didn't expect the first class he ever taught to be one of the toughest obstacles of his life. After getting off on the wrong foot with the entire class, a moment of kind-heartedness instantly convinces one of his students, Rin Kokonoe, to make the ill-fated Aoki-sensei her lover. But what exactly are Rin's intentions for wanting to actively seduce Aoki-sensei, and will Aoki-sensei be able to help her to deal with them?

__Height:__ 170 cm

[Website](http://web.archive.org/web/20100525120613/http://profit-v.com/pro/talent_tanaka.html) | [Twitter](https://twitter.com/issiki_hikaru) | [Wiki (en)](https://en.wikipedia.org/wiki/Ry%C5%8Dko_Tanaka) | <a href="https://ja.wikipedia.org/wiki/%E7%94%B0%E4%B8%AD%E6%B6%BC%E5%AD%90_(%E5%A3%B0%E5%84%AA)">Wiki (jp)</a>

Not to be mistaken with gravure model Ryouko Tanaka (04.08.1984, same kanji).

She is a freelance voice actress (seiyuu), who formerly worked for Pro Fit, Arts Vision and Office Mori. She is good friends with fellow actress [Harumi Sakurai](https://anilist.co/staff/96133).

The story of Kodomo no Jikan is centered around 23-year-old Aoki Daisuke, who has just landed his first teaching job as a grade school teacher at Futatsubashi Elementary School. He is placed in charge of Class 3-1, where one of his students, a mischievously precocious Rin Kokonoe, develops a crush on him and goes so far as to proclaim herself Aoki's girlfriend. She aggressively pursues her efforts to be with her teacher despite the fact that he will lose his job if she gets too close, a situation further complicated by the often complex, intertwining relationships existing between them and their respective friends, families, and peers. 
(Source: Wikipedia)

A series of OVA episodes released with the limited edition manga volumes. Episode 01: What You Gave Me (Anata ga Watashi ni Kureta Mono) 
Kokonoe, Usa, and Kagami go shopping for a present for Sensei. Eventually Kokonoe decides to make one and they all end up spending the night at her house. Along the way we learn more about Usa's love for Reiji, Kagami's love for Kokonoe, and Kokonoe's love for Sensei. Episode 02: Kuro-chan, Shiro-chan (Kuro-chan to Shiro-chan) 
Kuro-chan tries to become friends with Shirai-sensei. Episode 03: A Child's Summer Time (Kodomo no Natsu Jikan) 
The girls, Aoki and Houin go into the country to visit Aoki's family.

The story of Kodomo no Jikan is centered around 23-year-old Aoki Daisuke, who has just landed his first teaching job as a grade school teacher at Futatsubashi Elementary School. He is placed in charge of Class 3-1, where one of his students, a mischievously precocious Rin Kokonoe, develops a crush on him and goes so far as to proclaim herself Aoki's girlfriend. She aggressively pursues her efforts to be with her teacher despite the fact that he will lose his job if she gets too close, a situation further complicated by the often complex, intertwining relationships existing between them and their respective friends, families, and peers.

Kyouko Houin