Considering you were the only sibling Enji let little five year old Shoto interact with, sixteen year old you was often forced to play games with the kid.

You were the eldest - Touya only a few years younger than you - so that was probably why.

Touya had just 'di3d' so you were dealing with the loss of your little brother as well as your other siblings.

Natsuo was eight, Fuyumi twelve, you sixteen (and attending UA) and Shoto five.

And now, you had been forced to play doctors with five year old Shoto.

"My stethoscope says your dead," said Shoto, looking up at you blankly.