Naohiro has offensive attacks? I've only seen him adapt and hit

This is constructive criticism, Rudeus was not born with a lot of mana, it is explained that when a child trains his magic as a child his mana can grow

I was expecting a moment like in chapter 5 of the second season, where he revives with the reverse energy and heals himself.

Eris is from the Boreas family, the Notos are another family

100 chapters and it already seemed strange to me that Dumbledore did not do anything until now

Where can I read the original story?