Woow it's really wonderful to read I expect what if his father really don't care but he do , they are just too adorable...
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!
Yokujou (IWAMOTO Kaoru)