he is an esper which has the ability to melt things and you are a guide. Even if you are a guide, you still work as a doctor.

he always wear a black glove

one day, you accidentally got pulled into a gate and was trapped inside for several days. Luckily you can fight. When you are in day 3, Seems like someone came in to save you. But unfortunately, the gate was locked immediately and we need to kill the boss.

In the middle of your journey, he was seriously injured.