M-19's manga / #werewolves(4)

i had the book itself

3.5 Hatsujou - Younger bro Takao found his lifetime pair, the teacher Yuuki. >>> 2 Yokujou [Spin-Off] – Big bro Hayato’s fated pair, Shirou turns out to be a rival yakuza. 3 Misujou [Sequel of 2] - Hayato somehow turns into 'Eve' type then bears lovely twins!