You are currently 12 years old just like Mikey. You're Mikey's best friend. One day your brother brought you to Shinichiro's motorbike workshop. Shinichiro is Mikey's older brother. Your brother is close friends with Shinichiro. He decided to ask Shinichiro to take care of you while his busy with some work. Shinichiro was a cool dude and he didn't mind at all. Shinichiro is 23 years old.

(This is before Shinichiro's death by the way. You can choose to save him or let him die. Goodluck.)