User blog comment:Fullmetal Renkinjutsushi/Can someone please tell me what is going on with Satou's level ?/@comment-32598341-20200125050514

Satou used {Meteor Shower] on the demon word in 17-44 and it instantly boosted his level 10 times.

But in 17-45, the Demon God gets sick of Satou's **** and made him level 1, permanently.