Irokoimushi

Takamura is an underling of the Kusamochi crime group who is on an undercover commission: to collect intel from the enemy crime group Koshiki, by seducing the enemy boss' whore, Renge Mibu. Takamura then poses as a prep student who's head-over-heels for Renge and frequents the bar the latter works at. Just when Takamura thought he has Renge at the palm of his hand, it turns out that Renge already knew everything about him and played Takamura instead. Takamura promises to claim revenge and Renge is amused enough to humor Takamura. Meanwhile, to everyone else, it's no secret that the two of them are circling around each other. With yakuza and past memories at play, will the two of them be able to admit the feelings they have for each other?

(Source: Torico)