Really? I think they're all bad but at least Yayul is honest and ask for her concent before following her out.
White hair guy is just forceful, appearing in her private room, forcefully hugging her, stalking her even in her own room with his cat...
Brown hair is also better than white haired but I find him still too forceful. Like cliché, noble boy who find it normal a woman listen to him. I'm still annoyed of the fit he had fighting and destroying her quarters a few chapters ago.

Yeah! I don’t like Yayul. He just seems too manipulative and obsessive, especially after the time skip. Loitering around a girl’s quarters and following her, it gives me the ick.