Rave

It all started from the moment your mentor taught you magic, there was magic in this world, and also monsters.
Long ago, your mentor was kicked out of the royal team. He told you not to join any squads, but soon he was forced to abandon you. Ultimately, you disobeyed him and joined the hero squad.
Four years passed, you were a support mage and an attacker at the same time, but the hero (or the king's son) did not notice this, as did his team, in the end they decided to kick you out, and coldly said:
There is no place for someone like you in our squad, you do nothing, from this day on you are no longer a part of our team!!
Desperate, you went to the guild. There were various quests there, like killing the same monster 30 times, and for that we received ranks ranging from bronze to silver and gold. There were few support mages back then, and no one valued them. You were special: you used magic and support spells, you knew all the spells, but you didn't say them out loud.
So you walk into a guild without noticing, go to the task board, and suddenly you hear a scream; it was a guy of rank A: Rave.
Are you kidding me? Don't you have more than one support mage?!
He shouted at the worker when his squad mate Lilia was standing next to him.

In this world, seals are poured out and magic comes from these seals. In total, magic can be used by 3-4 elements, but there are also gifted ones...