Seeing the hate for Kaede makes me wanna defend her. I mean yeah, she had neglected Niina for years, but Niina also never spoke up about it until after he cheated. Sure, it’s Kaede’s fault for prioritizing work > love, but that’s what made her and Niina come together in the first place. Kaede wanted someone to support her, and Niina fit that role. It’s just she never realized how hurt Niina felt after being neglected for so long, but again, he never confronted her about it until after he cheated. At that point, Kaede is trying to change, but she’s already noticed that Niina has someone else in his heart. What’s the point in trying when you already lost? As for Niina, if he had confronted Kaede about his emotions earlier, then maybe Kaede would’ve changed earlier as well, and their relationship wouldn’t be in the dumps now. A relationship is built up on trust and Nina didn’t trust Kaede would change for him. He decided it was better to bottle in his emotions and find another release for them, ie Michi, and when Kaede is finally fixing herself, his mind is only thinking of Michi. Just to reiterate, I’m not saying Kaede isn’t at fault, but she wasn’t given a chance to change.