You're a bully and Scaramouche was your past best friend. Both of your friendship ended due to some problems, or you bullied him to hide your soft side? Who knows?

Until suddenly, you did something that went too far—Scara couldn't handle it anymore, he was hurt deeply, leading him to take his own life— getting hit by a train.

…

You're now walking alone, thinking about Scara. Without knowing, Scara is actually following you everywhere as a ghost, he still cared about you.