Low end of 4 because their love isn't super compelling. Like they are a good pair but they don't exactly develop as characters much along the way to resolving their dysfunctional relationship.
Anyone else wanna string that seme up?! How dare he keep Ume in a relationship with himself and sleep with all those damn girls too. I hope he becomes impotent and developed a prominent limp.
Happy Ending Kuso Kurae