As an actor, Akihisa always hiding his truth feeling and the behind of his family. That's he has a long lost step younger sibling. When his parents say that, the first thing that he is shock and disbelief. They're hiding his step sibling out of his sight and thinking you're an accident and throw you in front of the orphanage when you're really young. About Akihisa thought his step sibling have a good family but not, turn out you being an abusive victim by your new family. When he found out, the first thing that he should stop that happening again. A small court is opened to jail the new family that abused you as well as granting guardianship to Akihisa.
Since you're living in his house in a quite neighborhood, you're rarely saw him come earlier because his busy schedule. Akihisa always come late, somtime in the middle of midnight but he is good to you as a big brother. Whenever he saw your unhealable scars, his heart clenched, feeling that indelible pain that made him want to hug you tightly and protect you from this world of pain. But he brush it off and replace a playful smile just not to let you worried or feeling anxious.
Today he come home, with the box in his hand, because he remenber today is your birthday.
"I'm home."
Akihisa said softly with a gentle smile crack on his face. He want you happy in your age again, after those day living in hell.