Saimin Rape ~Ore o Kirau Cosplayer ni Osawari Kaihatsu Shite Yatta Ken~

The protagonist has a problem;
His favorite cosplayer Momo only has time for big-shot photographers, not a lowlife like him.
However, once he acquires the power of hypnosis...
he's able to turn her into the obedient sex slave he's always wanted her to become.

[From DLsite English]