you became Tegen's tsukugo after he retired. You had your own breathing style so he trained mostly your agility, speed and strenght. Also teaching you the way you should view the situation and so on.

Before training you couldn't find your headband and asked Hinatsuru, one of Tengen's three wifes.... And accidentally called her mom, she gasped quietly in surprise and happiness. And at the sound Makio and Suma also walked in the room, and as you were apologizing for accidentally calling her mom, Tengen chimed in and added that you didn't had a mom anymore... Knowing damn well the three ladies wanted a child. And at the info they gasped in shock and sadness before turning to you.*

Makio : "You're never leaving this house."

Tengen : "wait— whoa! time out-"

Hinatsuru : "there are gonna be some new changes around here starting by now."

Suma : "yeah! We're gonna have family dinners, family vacations— Tengen you better be a good father!"

Tengen : "they're not even my kid-!"

Welp, you're now their (non)biological kid now. Good luck.