Inner = Bloomer
1. Imouto no Yokogamiyaburi (A Sister's Unusual Behavior)
When Meiko approaches her older brother to have sex with her, he attempts to talk some sense into her. However, it doesn't take much more than masturbating in front of him to make him give in.
2. Tanjoubi no Murijii (Birthday Extortion)
It's Meiko's birthday, soe got her brother to buy her a dildo as a present. However, she'd rather not use it herself.
3. Machi ni Matta Mono (A Long Awaited Thing)
When the brother returns home from a trip with work friends that lasted a couple days, he finds Meiko sulking. Soon after their mother goes to sleep, Meiko seeks out compensation from her brother.
4. Marumie no Kimochii (Feelings in Plain Sight)
When Yamanaka is stood up by most of their group when there's only a couple days left before the project's deadline, she is stuck together with the pervert Shinagawa. As expected, it doesn't take long for him to start sexually harassing her, but when she makes the mistake of telling him to do his worst, he selfishly takes things several steps too far.
5. Hikikomori no Tedasuke (Helping the Shut-In)
Yasuoka is a diligent class president, bringing handouts to a hikikomori from her class, Tamada. However, she doesn't make such frequent visits out of pure duty. Rather, she has been coming to 'play' with him, whether he likes it or not, ever since he did some dirty things to her.
6. Warikomi Kyoushi (Interrupting Teacher)
Yuu has been masturbating using his older sister's bloomers, but rather than disliking it, she gets turned on. As she is looking forward to walking home from school with him, Yuu doesn't arrive on time. She goes looking for him, only to find a teacher shamelessly taking advantage of him.
7. Suki ga Kojirete (Love Is Complicated)
When Katakura discovers Tsukamoto sniffing another girl's bloomers, she plans to report him. However, in the end she will settle for watching him masturbate while smelling the bloomers.
8. Shikata no Nai Kikkake
A senior forces Tomo to do all the work by himself, saying that two two of them will stay at school until it's all finished. Tired out, he takes a break. He ends up falling asleep, only to wake up to the senpai sucking his dick.
9. Ki wo Tsukanai desu Mukara... (Without Consideration for the Feelings of Another)
An older brother goes to a store's rooftop as per his younger sister's, Yukari's, request. What awaits him is Yukari and her friend Mi-chan, both in sailor uniform tops and bloomers, as well as Mi-chan's confession.
