Anyway, I'm falling in love with you endgame romance

Hey guys, I'm reading this manga rn and I was wondering: Am I the only one who dislikes the so it seems endgame romance between mizho and kizuki? I can not even tell what it is but Kizuki seems egoistic to me, his whole behaviour is so baby like, while all the other friends try to consider others and their feelings and wanne hold together the group, he has just swimming and mizho in his mind. The dissapearing aside... I'm also dissapointed that it again seems like no other second lead even gets a Chance because the Feelings are so monopolized even after years and years. Sometimes it might be just the secons lead Syndrome but in this case it really hurts so badly because Shin seems like the better person, more mature and reliable too. I was so hyped about the manga at first, now it seems really guessable whats going to happen like in true beauty. I really hope at least Ariu gets it's happy end with a cool one and is not also still in love with Kizuki even after ten years of unrequired love Cheez...