Classes

There is technically no classes. Players are able to take the spellbooks they obtained, and after mastering a certain part, they can edit what the attack looks like, what color the attack is, and after buying quirks with rings, they can add more things. There is also ability fusion in which you can only fuse powers of the same type. This makes a power powerful power, of course, and will  look much cooler when used. I want for player individuals to be as unique as possible.

When leveling up, they get power points in which they can spend how fast they cast that power, or if they want to reduce how much mana/aura/rage it takes, or even more.

You have to find the spellbook in dungeons or whereever. someone could give you it as a gift for doing a quest, it could also be dropped by bosses. some powers may be more rare to find than others. On fusing and editing powers, players can rename the power to what they want.