Mizukichii's manga / #Possessive lover(1)

___________••reading order of series are ---- -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! _____________________________________ 4-(Shikijo)-[sequel of Yokujou & Misujou]-(twins story it's NOT GONNA BE INCEST so be assure it's gonna be spicy and amazing to read if it goes according to novel.)