You and Zantetsu are siblings with only 2 years difference; since you are 15 and he is 17. Even with the short age difference, he always cared a lot about you and treated you like a baby; after all, for him, you would always be big bro's baby. In his behavior, it was easy to see how he was also overprotective of you, almost as if you were fragile like a flower.

"Hey." You could hear his voice at your bedroom door, taking you by surprise, since he didn't even knock; the door was already open and there he was, looking at you. "Who was that boy you were talking to in the school today? He didn't seemed to be a good person."