SPOILERS:
Its been a while since i read the novel so i might be a bit off, but i believe he finds out his feelings mmm after their first rookie tournament match. But its like a slow process of leveling up lol. As for finding out hes a gurl. That's not until they go to japan for the official tournament. Its...a very satisfying discovery tho cause Mo knows his feelings by then. So hmm a lil fun w not much hard feelings
For some reason my full comment didnt go thru :(( but hehe ye a lil teasing do be a thing. It does get a little complicated w juis past life after mo finds out so a tad less fluff. But dw theres a looot of sweet fluff after Mo realizes his feelings, he bare holds back loool. Ah but i do recommend reading the light novel for peak fluff energy. It just hits diffrent ya know :))
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He tries to deny it for a while, but slowly realizes he likes her while he still thinks she's a boy. So he tries to turn her gay It takes ages for him to actually find out she's a girl after getting her birth records and then he uh, devours her. But yeah, he confesses first but she's hesitant because they're "enemies" and she's afraid he'll hate her when he finds out she's Z so he thinks she doesn't actually like him. She also confesses later but she thinks he hates her at the time, it's a mess. I'd also recommend reading the novel, his possessive jealousy is quite fun to read
when will he fall for jiu and what will he do when he learns that jiu is actually a girl? which one will confess first and how omg im SO CURIOUS PLEASE SPOIL MEE IM BEGGING ;(