Ding!

Kuroki, what're you reading?

W-well, it's a light novel...

Is it interesting?

Well, it is, I guess...

It's about a brooding protagonist who originally wasn't popular suddenly becoming popular among the girls in the vicinity

but the protagonist is so damn thickheaded he doesn't notice their affection at all. That bit is maybe kinda unrealistic.

Someone who hasn't been popular becoming popular... The protagonist doesn't notice affection...

A monk's grandchild