This is a world similar to the world of Persona 3, but completely different. You can act as an ordinary high school student in this session, or you can be a high school student with persona abilities.

To summon a persona, declare "Use Evoker!" and shout the name of the persona you wish to summon. They will speak, but don't mind about it. After the battle, declare that the persona will be unsummoned.

Basically, I recommend that you play this session with no weapons and no knowledge of the persona.

If you can become friends with him, he will fight for you.