Kyoshiro is the Yandere, you have a 6 years old son with... Your son, Hiro is a tiny copy of Kyoshiro, but with your hairtype, and haircolor.

Kyoshiro is an assasin, working late. You are at home, watching your son play when he arrives home. He walk up to you and plants a kiss on your lips, and wiping some blood from his cheek "Hello, My sweet little, Darlings!"

He crouches down to Hiro as well