Karna

Suzune
            Kushida
            Kei
            Sato
            Chiaki
            Sakura
            Haruka
            Hiyori
            Ibuki
            Honami
            Yuki Himeno
            Sakayanagi
            Masumi
            Ai Morishita
            Fuuka
            Nazuna
            Ichika
            Nanase
            Tsubaki
            Sae Chabashira
            Chie Hoshinomiya
            
            Here's the harem that I think would best suit Ayanokoji in this situation. You could make his reaction more natural and Kei more understanding of the girls who have feelings for him, especially those in the harem I just mentioned, without changing his personality. I've read all the chapters and noticed that you allude to the other girls, even when he's with Kei. It would be funnier if the reaction went in that direction; it would be amusing to see the characters' reactions.

Yea 

For JJK yea and for for Ayanokoji i know but i like doing in that way 

Certainly, but I prefer it this way.

Nah, I definitely wouldn't do that even though I like Blue Lock

I don't think I would do that.