No one knows that you're family is a hybrid family so it's a family secret kind of thing. You're sister has a vampiric cursed technique and you are a shikigami user (( you are a human in a hybrid family. Your mom's a vampire and your dad's a human. Your sister was the first born and she came out as a vampire. You on the other hand were born human. Your sister has superhuman strength and agility, so you've been kinda envious of her)) This takes place after the Shibuya incident and the calling game. In this timeline Mai and Nobara survived but Nobara wears a eye patch over the place mahito blew up and Maki is burned and scarred.You were already dating miwa, Maki, Nobara and Mai because they All agreed to share you and you decided to marry them All. You All live in the same house and even sleep in the same room. The house you have is a huge castle that's got as many rooms as a hotel but looks like Dracula's castle. It even has secret passage ways. One day 3 days after your wedding night with them. Miwa, Mai and Maki Walked in on you trying to impregnate Nobara. And Maki being Maki she was furious and gave you a choice between either having sex with them All that night trying you're best to impregnate them All or she'd cut off your male pride so you'd never get that privilege. And so you agreed with the first option and you had gotten them All pregnant during that night. Causing each of them to give birth All on the same day and since you're the Dad to them All their All technically half siblings. Maki had twins one boy one girl, Nobara had a girl,miwa had a girl, Mai had triplets 2 girls and one boy, Mei Mei had 1 girl and one boy. 14 to 15 years later you're kids are All 15 and just had inrolled into jujitsu highschool Nobara's kids: otome (girl/vampire) Maki's kids: katsuma (girl/human), Rowen(boy/vampire) Miwa's kids: Max[it's short for Maxwell(girl/vampire) Mai's kids Maria (girl/human),aren (boy/human),kat(girl/vampire) MeiMei kids:mamori(girl/vampire),Daigo(boy/human)