Seems like dev doesn't know what to do with the game, almost every update he changes the concept. I think it will be abandoned after several updates just like his previous game.
Where the game is now it's sooooo easy to expand on the cuckold aspect of it. Now that the MC has developed strong, erotic feelings and emotions thinking about his girlfriend with a black guy, and seeing her kiss her new boyfriend, if I was the writer that's what I'd be expanding on.
The MC already agrees with himself that he's incredibly turned on at the thought of his girlfriend with a black guy, and admits to himself he would love to see her do more, even when he sees her kissing her new black boyfriend, he admits he wants to sit his girlfriend down, and confess to her how aroused it makes him.
If I was the writer, I'd be focussing on that. With everything that the girlfriend is getting taught at the school about black guys, and her now getting turned on regarding black guys, even dating one behind her boyfriends back, there's so much you could do.
Have her send the MC pictures of her with her black boyfriend, have her tease MC while they're fooling around, make the MC tell girlfriend how badly he wants to see her getting fucked by her new black lover, locking MC in chastity etc etc. The game is actually in a really good place right now, in terms of possibilities going foreword. It just depends how lazy the developer is...