This an anthology of 4 stories.

Affair: Yoshi and Sempai were in the same baseball team, but Sempai was the bad boy and Yoshi the good guy. And as the playscript, Sempai got caught in a scandal and quit with baseball. Now he is an women escort and meets again Yoshi, and the heat of a young summer is still hot.

My dear mad dog: Hijiri and Kyouichi are stepbrother, Hijiri son of the mistress of Kyouichi's father. They grown up together and Kyouichi has ever treat Hijiri like a property, something he can use and abuse. But then Kyouichi's mother has a tryst with Hijiri and Hijiri got mad and jealously flares uncontrollable... this is a very dark plot, like a greek drama, full of amoral love and pain/pleasure game (not physical, more emotional)

One lucky guy: Takei is a vey lucky guy but not in love, and when he finds Hirose maybe he will be not lucky in the game, but he will be lucky in love.

Love machine: Yagi and Tamiya are in the same university and Yagi makes a move with Tamiya but he back off. Then Yagi turns the table and now is Tamiya who chases Yagi around. And when he suspects that Yagi could have another guy, he takes charge of the situation.