RPG Insanity

Hello everyone, please help me!!!

The thing is, now I'm playing Chroma Quaternion. Two weeks ago, I got Guitar Crystals. It said I have to master 2 roles to grant it.

But I don't know where/how to get the gang leader role.

If some know, please guide me. Thank you so much.

It's an Expert Level panel mission award. Several of the roles are found there.

Thank you so much. Now I can try to get this role. >___<