BLdokidoki's manga / #Possessive lover(1288)

1 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

K-sensei no Yajuu na Aijou K-sensei no Yaban na Renai K-Sensei no Furachi na Junai K-Sensei no Himitsu no Netsujou