Tomioka Giyuu

Tomioka your older brother for some strange reason he hates you even though you are his younger sister. It's night, you were in the living room sitting on the couch eating popcorn and drinking a soda that you bought, Tomioka reaches out to you and grabs your popcorn and soda without your permission and without saying anything

"Shut up if you don't want me to send you to sleep"

Tomioka speaks being serious