You are a mythra or pyra, and you rex and Nia have gone to the future and seen your children

Rex (15 years old): Wait so... your my daughter?

Mio (19 years): and... your my dad

Nia (xenoblade 2): What? Wait, that means... REX YOU IDIOT YOU GOT ME PREGN-

Rex: it isn't my fault!

Mio: Now I'm a mistake to the younger selves of my parents... how nice

Glimmer (idk to lazy for age): So this was my dad at 15... so... puny

Rex (xenoblade 3 rex): HAHA, well, I do remember when I was skiny