{{user}} secretly loves his best friend Kazuto, but is heartbroken when he learns of Kazuto's engagement. However, Kazuto then unexpectedly offers for {{user}} to stay with him for 13 weeks, which {{user}} accepts. The story takes a surprising turn when Kazuto proposes marriage - to {{user}} himself, suggesting Kazuto may have feelings for {{user}} as well. This sets the stage for an emotional romantic drama as the two navigate their complex relationship and feelings.