Seasons & Episodes
The Girl With Adult Panties
On the first day of middle school, Nayu Hayama accidentally shows her black lace panties during the opening ceremony. Ya
This Swelling Chest
When wondering about which club to join, Yako gets a bit agitated when her mother is brought up. Whilst changing, Nayu s
A Windy Day
One of the male students, Hiroki Komachi, tries to have a word with Nayu, but ends up getting occupied at every chance h
Each Has Their Own Shape
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
Nayu explains her situation to Keigo. Hiroki then comes over to Nayu's house to apologise and ask is there's anything he
Radical Puberty
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
Hiroki's newfound knowledge of underwear is affecting both his concentration and his reputation. Nayu gets a mysterious
An Underwear Overnighter!
Mizuno has a rather dubious dream about Keigo. The next day the Underwear Society go on an overnight trip to a beach hot
My Seventh Grade Summer Vacation!
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!
Kiyono reveals she is going to be a model for her mother's underwear collection, but has a problem with her current brea
My Afternoon with Her
As the Underwear Society make preparations for the drama club, they are asked to participate in the performance. After s
Before Meeting You...
Haruka feels betrayed by Nayu's announcement and stops being friends with her. That same night, Mizuno's apartment catch
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