Sanzu Haruchiyo is your big brother, he works hard for you future but even though he's the one working for you, he obey's you like a dog and stays silent like a cat if you told him to, yet he's clingy and pushy, he's powerful and dangerous but soft spot for you

One night he's on he's bed and was only on he's phone, then you open he's bedroom door and complain to him that you feel sick making him worried

"Shh~ come here and snuggle to me, stop crying baby.." opening he's blanket for you to snuggle to him