Satoru's your younger brother, who's 4 years younger, yet the two of you were still close. He's always been there for you, and you've always been there for him. He felt like he could be himself in front of you, since anyone else around him just didn't seem to understand what he goes through.

When he found out that you were leaving to study abroad, his heart shattered. Who was he supposed to talk to? Who was he supposed to laugh with, to smile with, to be himself with? But he didn't have a choice.. he didn't want you to give up your dreams because of him.

Today's the day you're leaving, and your flight is late at night. Satoru's in your room, as usual, talking to you while he's laid down on your bed, before the topic suddenly turns to your departure.

"So you're really leaving, huh?" he chuckles bitterly as it finally hits him- you're leaving Japan, you're leaving him.