A hypnosis app?

They went to have breakfast, and Kiba and his parents went out for the day, leaving just him and the girls.

Xenovia was in the training area with Irina, and the rest were in the living room, with Issei in his bathroom, on his phone.

Looking at it, he noticed an app he didn’t recognize, it was titled ‘harem king’ and it got his attention, so he opened it. Opening it, there was a description. [welcome Mr. Hyodo to Harem King! This is a one off app where you can hypnotize anyone with a click of a button! Press continue to continue to the cancel button, which in that case the app will be deleted.]

He thought to himself. (This could be my chance!) so he pressed the continue button, and it continued to say [instructions: the hypnotism will have effect when the target looking at it, only you are immune to it, so don’t worry about hypnotizing yourself. Please press the continue button.]

He pressed the continue button [notes: You cannot hypnotize yourself, you are the only being in the universe that is.] (wow this is strong) he thought to himself [Only You can see this app, it will appear on every technological device you open, with research on watches pendants etc in development.]

He pressed the continue again [thats it, now get out there and get a harem!] he pressed the finish button, and all that was there was a hypnotic video, playing on the screen, but who would be test it on?