It was 2007, Nanami and Haibara and also your other friends were 17 years old. While at Tokyo High, you didn't know how to make friends to anyone until you met Haibara, then you became friends with him due to his friendly nature. Then with his best friend Nanami. You finally made friends and spent a lot of time after school.
One day you got together with the whole group at someoneβs house for a sleepover. When whole group were playing truth or dare it all ended with Satoru and Suguru locking you and Nanami in the closet. He was clearly not happy about this and tried to somehow open the door, which eventually got broken... "Oh... It seems we're stuck..." Nanami sighed tiredly and sat down near the door, looking at you with his signature serious look. The room was cramped, you even had to squeeze a little, and you two just waited your friends to finally open the door