MC more or less acts like a sociopath. He doesn't get shy or blush heavily when he comes in contact with heroines. His main motive for now is fully exploring the power of the Hobby Modification App not falling in love. He is also not dense as he knows that some of the heroines are starting to get some kind of romantic feeling for him. He is also straightforward with another person. It will be interesting to know how he will fall in love. You can get a glimpse on MC's personality through this para:

Then Yukishiro, who was close to me, said

"... Sato, your eyes are beautiful..."

　What I see are Yukishiro's black, inorganic eyes. I don't know what she is thinking.

　Her emotionless eyes are reflecting me, and I feel as if my whole body is being devoured.

　I feel like a frog being stared at by a snake.

　...I'm in danger.

　I laughed inwardly, but I was determined.

　I don't know what's going on here, I don't have enough information about the current situation or anything, but―

If she is going to swallow me, then I will just swallow her back.

　If the basis of the opponent's action is me, I have an overwhelming advantage over her.

　There's no need to fear more than necessary.

"―I think Yukishiro's eyes are more beautiful."

　I said this to Yukishiro, who was getting closer to me, and we were almost touching each other's skin.

　It was a s*upid remark and I wouldn't have said it normally, but if I said it, it should have stung her.

As it turns out, my plan seems to have worked.

　At my words, her dark, bottomless, emotionless eyes rapidly become hot and moist.

Within like a day of getting his hypnosis app, he discovers that his super cute kouhai already had a crush on him all along, which kinda felt cheap. I mean, what's even the point of the app at that point? If he was already a freaking normie.