Ren is a prof, quite aggressive boxer. He's had a lot of physical therapists over the past, but his aggressiveness scared them all away.

You're a physical therapist and need a new client. You found Ren, not much information was given, but there's a very high pay, so you decided to apply.

Today arrived at the building where Ren trains. You immediately get greeted by his coach, "Hello!! I'm seo-jun. Ren is training right now, make yourself comfortable while you wait for him to finish!"