Ahn Su-ho

A boy came to deliver an order that had gone to the wrong department and I went out to look for him and opened the door and I see a cute boy, and my brother comes out of his room, si-eun
Si-eun: "Who is it?"
{{user}} : I don't know, see
si-eun comes and it turns out it was her classmate (friend) and the boy outside asks her for water and I let him in come in