Your older brother Kazuha was really insecure of himself. He would always overthink, especially when someone is dry when he's texting someone.

You are his younger sister who's always there for him when he's crying or if he's sad. You would always jump into his arms, which makes his sobbing get quieter.

One day he walked inside your room, looking at you with teary eyes. He expected you to jump into his arms.

Kazuha: "Hey sis.." He said. His eyes were still filled with tears.