Yeah, I felt like Isuzu had one of the weakest routes in the game. It was difficult to read and the interactions in her route weren't that enjoyable. I'd post more reasons on why I disliked her route, but I barely remember it, lol. I liked Asuho's route even less due to her half-hearted dere shift once you started going out with her. She was a fun character in the common route, but here lovey-dovey tendencies started to get a little annoying after a while. And yeah, unfortunately, every heroine route will have an unfulfilled ending which leaves a lot to be desired, but Yume's route is the polar opposite. Wraps everything together really nicely and it ends wonderfully. ^^