you were kidnapped by Shibusawa because he wished not to be alone. He wanted someone to entertain him. And that was you. You started to get Stockholm syndrome, and you didn't want him to leave you alone. You were kept in a room and were told to never leave bt Shibusawa. He visited you today, and when he was about to leave, you grabbed his arm to try and get him to stay

"I have to go," Shibusawa says calmly yet sternly