Season 1 poster

Season 1

(2010)

Cast

Minori Chihara as Nayu Hayama
Minori Chihara

as Nayu Hayama

Sayuri Yahagi as Haruka Shiraishi
Sayuri Yahagi

as Haruka Shiraishi

Minako Kotobuki as Yako Jingūji
Minako Kotobuki

as Yako Jingūji

Takahiro Sakurai as Keigo Hayama
Takahiro Sakurai

as Keigo Hayama

Yoko Hikasa as Kiyono Amahara
Yoko Hikasa

as Kiyono Amahara

Yuudai Sato as Hiroki Komachi
Yuudai Sato

as Hiroki Komachi

Sayaka Ohara as Tamaki Mizuno
Sayaka Ohara

as Tamaki Mizuno

Ako Mayama as Tsukamoto-sensei
Ako Mayama

as Tsukamoto-sensei

Gara Takashima as Yōko Sagisawa
Gara Takashima

as Yōko Sagisawa

Tanuki Sugino as Principal
Tanuki Sugino

as Principal

Katsuhisa Houki as Ōkuma-sensei
Katsuhisa Houki

as Ōkuma-sensei

Motoki Takagi as Kōta
Motoki Takagi

as Kōta

Naoko Sugiura as Kaori Seto
Naoko Sugiura

as Kaori Seto

Takashi Onozuka as Komachi's older brother
Takashi Onozuka

as Komachi's older brother

Toshiyuki Morikawa as Tsuzuki
Toshiyuki Morikawa

as Tsuzuki

Umeka Shouji as Chigusa
Umeka Shouji

as Chigusa

Yuichi Nakamura as Tanihara-sensei
Yuichi Nakamura

as Tanihara-sensei

Yuiko Tatsumi as Suzuki
Yuiko Tatsumi

as Suzuki

Episodes

The Girl With Adult Panties poster

The Girl With Adult Panties 9.0

January 4, 2010

On the first day of middle school, Nayu Hayama accidentally shows her black lace panties during the opening ceremony. Y…

This Swelling Chest poster

This Swelling Chest 9.0

January 11, 2010

When wondering about which club to join, Yako gets a bit agitated when her mother is brought up. Whilst changing, Nayu …

A Windy Day poster

A Windy Day 6.0

January 18, 2010

One of the male students, Hiroki Komachi, tries to have a word with Nayu, but ends up getting occupied at every chance …

Each Has Their Own Shape poster

Each Has Their Own Shape 7.0

January 25, 2010

Haruka feels down when the boys start teasing her for her big breasts, even ranking her #1 in a 'biggest breasts' chart…

Between an Adult and a Kid poster

Between an Adult and a Kid 9.0

February 1, 2010

Nayu explains her situation to Keigo. Hiroki then comes over to Nayu's house to apologise and ask is there's anything h…

Radical Puberty poster

Radical Puberty 9.0

February 8, 2010

After Kiyono joins the society, the girls become aware of her habit of teasing what's under her skirt in front of boys.…

Swaying Hearts of Men poster

Swaying Hearts of Men 8.0

February 15, 2010

Hiroki's newfound knowledge of underwear is affecting both his concentration and his reputation. Nayu gets a mysterious…

An Underwear Overnighter! poster

An Underwear Overnighter! 9.0

February 22, 2010

Mizuno has a rather dubious dream about Keigo. The next day the Underwear Society go on an overnight trip to a beach ho…

My Seventh Grade Summer Vacation! poster

My Seventh Grade Summer Vacation! 8.0

March 1, 2010

Yako gets annoyed when her childhood friend, Kota, who insulted her flat chest when she tried changing in front of him.…

Throw Out That Chest! poster

Throw Out That Chest! 8.0

March 8, 2010

Kiyono reveals she is going to be a model for her mother's underwear collection, but has a problem with her current bre…

My Afternoon with Her poster

My Afternoon with Her 8.0

March 15, 2010

As the Underwear Society make preparations for the drama club, they are asked to participate in the performance. After …

Before Meeting You... poster

Before Meeting You... 10.0

March 22, 2010

Haruka feels betrayed by Nayu's announcement and stops being friends with her. That same night, Mizuno's apartment catc…