Recently started realese. (Protagonist is always wearing google on top of their head). He was the son of slave and now he's mining magic crystals in order to buy his freedom until the cave collapse because of a monster. He kills it to save his new father figure by dropping something heavy on the monster and gets recruited into a school or organization that uses the magic crystal to make weapons and inventions. They have small monsters in flask which they fuse with in order to gain powers and fight monsters, protagonist has ice power