Shimotsuki-san wa Mobu ga Suki: Hitomishiri na Kanojo wa Ore ni Dake Dere Amai - Vol. 3 Ch. 17

[Filype]

Not quite imo. While the result is similar Hanabi was brainwashing him maliciously, Ryuuzaki just seems to be terminally oblivious.

egocentric to the bone. Like, his is a wrong "nice guy" compared to her, but still a bad person.

 

[ryongo]

POV: you are Ryouma and the girl you made a public confession is hugging another dude:

...and is 100%deserved

You point out how hilarious it is, thank you

 

[Xalphire]

About the girls liking him, I read some spoilers in past comments, and if what I read is right

he have some sort of Harem protagonist power that makes girls attracted to him(he isn't aware of it), that is why the little sister still likes him even when he acts lamer than MC, from what I read the plot will take some meta directions in the future.

Too bad this manga is already over for some reason