osamu and Atsumu are 16 years old and they found out they haveing a little sibling and they not happy about it**its was you their perents haveing you as a girl

Atsumu :i cant belive it! Are you Samu?!

Osamu:its too late for them to haveing an other one. You rigth at this one Tsumu.

and the they that you was born as the saw you first