Hajime learns Creation Magic.

“...I see.” Hajime blushed a little. He then cleared his throat and
dropped a bombshell of an announcement.
“Umm, also, I think I learned a new spell... Some kind of magic from
the Age of the Gods, I think?”
“...Really?” Yue said, amazed. Her surprise was understandable. After
all, magic from the Age of the Gods was something the gods had once
used, magic that no longer existed in the present day. Teleportation
magic was from that age as well.
“This magic circle did something to my head, and it’s like I suddenly
understand how it works, kind of.”
“Are you sure you’re all right?”
“Yeah, I’m totally fine. Even better, this spell’s a perfect fit for me.”
“...What kind of spell is it?”
“Umm, it’s a creation spell of some kind. It lets me add magical
properties to minerals, and create new ore with special traits.”
Yue’s jaw hung open as she listened to Hajime’s explanation.
“You can make artifacts?”
“Yeah, something like that.”
The creation spell Hajime had inherited was the same magic people
had used to create artifacts in the Age of the Gods. Truly, it was the
perfect skill for a Synergist. Though Hajime didn’t know it, Oscar’s job
had also been Synergist.