How Do We Relationship Graphic Novel Volume 04 (Mature)

It's getting harder for Miwa and Saeko to ignore the tensions in their relationship as even their sex life starts to suffer. Saeko begins to feel like Miwa doesn't really see her while Miwa finds herself dwelling more and more on the past. They don't want to give up on each other, but what do you do when a relationship starts to sour? For older teen audiences.