Annoying rabbit?!
I agree with you about the muscle guy with anger problems (although I have heard that on his route you discover that he is that "hard on the outside but soft on the inside" type, but I have not verified it because I am simply not attracted to him), but what is wrong with you?! The rabbit is super fun, the only thing I didn't like about him is that after flirting with me I found out that he had some story with the muscular guy and tries to convince us to give that guy a chance. Aside from that, the most annoying character by far is the pink panda, the one who has zero respect for your privacy and is super insistent... but she's not a romantic interest. The rich guy seems like a responsible and nice guy... but too boring for me, and the flirter cat seems a bit desperate and rather makes me feel sorry for him. But they're all rather nice people.