Kakugo wo Kimete

Kakugo wo Kimete summary:

Tetsu is the son of a Yakuza boss who yearns for a 'sweet love', and meets his exact type of man, Senou. Senou, however, makes his living scamming people, and in turn, attempts to force Tetsu into making an adult video. A strong couple appears; "A no need to hold back" kind of chivalrous love! The story of Tetsu's childhood friend Tomoki and his Mathematics teacher, Sahara, is included.