My Unique Magic is... Mind-Control?

When summoned as part of a Hero ritual alongside 17 other people, James Adams discovers that the Kingdom only wants a handful of the heroes with the most combat ready magics to help fight the Demon Lord. When he finds out his Unique magic is Mind Control magic, he decides its best to lie about what his magic is. Over time, he is slowly corrupted by the temptation of his own magic.

This story follows a slow leveling system, with slow progression and development. The MC intends to use his powers to fulfill sexual and other desires, as he gains power, expect acts to become more depraved, as he becomes less content with what he's done thus far, and power corrupts.