1-4. Manatsu no Hanazono (真夏の花園, Midsummer Flower Garden)
Ryuu's parents won a 30-day cruise on a luxury liner, but they didn't want to leave him alone at home, so he will spend the time at his aunt's place. The woman is very attractive despite her age and her having two daughters, who too are beautiful and packed, so Ryuu is in for a memorable stay. Especially so since the aunt is long divorced, and the girls have known Ryuu since they were kids.

5. Goshimei wa Oneechan (ご指名はお姉ちゃん, I'll Take You, Sister)
Kousuke, lured in by the promise of pretty girls with huge boobs, visits brothel. However, when the girl assigned to him, going by Miyuki, turns out to be his older sister, he is definitely surprised. Nevetheless, she is pretty and does have a huge rack, so some pesky morality won't stop him from getting his money's worth.

6. Body Check
Makita is once again drinking at his place with his senior from work, Ogawa. She is a beautiful woman, so she gets together with guys easily, but for some reason she breaks up with them very quickly too. With her longest relationship lasting all of 3 months, it's no wonder these two spend a lot of time together, drinking. However, tonight Makita suggests there is something wrong with Ogawa for her relationships to be so dysfunctional, which promts her to challenge him to inspect her for said issue...

7. Youko-sensei Hatsujouchuu (洋子先生発情中, Youko-sensei in Heat)
Youko has been dating one of her students, Yamamoto, for half a year now. Everything is going brilliantly, until one day Yamamoto collapses. What could be the issue? The fact that they have been having sex 3-10 times a day every day ever since they started dating could possibly be it. Still, Youko decides to visit her boyfriend in the school infirmary, but rather than raising Yamamoto's spirits, she may end up exacerbating his condition...

8. Himitsu no Kankei (秘密の関係, Secret Relationship)
A certain young adult is tutoring a little boy. However, recently, rather than his job, the guy has been looking forward to the boy's mother. After all, ever since she seduced him, he gets to have a hot, unsatisfied wife all to himself.

9. Mini Mom (ミニまむ)
Yuuta's mom looks very youthful, to the point of people thinking she is his little sister. Still, that's no excuse to put on a school uniform and waltz into his school, all just to bring him the lunch he forgot at home! At least she brought him a proper lunch, not leaving out all side dishes and saying that he should have her abalone, right?

10. Gibo no Omoi (義母の思い, Stepmother's Feelings)
When Yuu refuses to take a bath with his stepmother for the first time, it makes her worry immensely. Feeling insecure, she decides to get into the bath while Yuu is still there and make of his feelings on her motherhood.

11. Ane no Gimu desu (姉の義務です, An Older Sister's Duty)
When Yoshiki asks his older sister what 'dipping the brush' means, she is horrified and angry at Yuuna, her friend who mentioned the phrase to Yoshiki. However, her anger quickly dissipates when Yuuna tells her that dipping her younger brother's brush is an older sister's duty. Learning that Yuuna has already done her own brother, and that she now has her eyes on Yoshiki, Yoshiki's older sister decides to act quickly.

12. Anetachi no Gimu Kyouiku (姉たちの義務教育, Sisters' Compulsory Education)
Yoshii's older sister and Yuuna teach Yoshiki about threesomes.