Kanpeki de Saikou no Kuzu (Kareshi)

(This was the signal for my hell to begin.)

Kanae, a popular model, has a charming boyfriend, Takatsugu. However, Takatsugu had a bad habit. He forgets his promise with Kanae and meets another woman...

Takatsugu was what we would call "trash." However, Takatsugu had become a part of Kanae, so no matter how much she was manipulated, she would eventually forgive him.

One day, Takatsugu even makes a move on a young man of the same sex named Kyouichi, who also harbors darkness in his heart. The relationship between the three gradually becomes muddier.

What awaits the three at the end of their bottomless obsession, at the end of their fall?