In the story of "Neighbors: Cohabitation 2", Aoi (played by Kamishiraishi Mone) chooses not to move with her parents and lives alone because she doesn't want to be separated from her good friend Moe. Not long after Aoi confessed her love to the school's prince charming Hiragi (Sugino Haruka) and was rejected, Hiragi moved next door to Aoi's residence. However, Aoi, who hated Hiragi, gradually discovered his many faces and her feelings towards him gradually changed. The two also started living together because of a sudden accident. In addition, there is a triangle relationship with Hiragi's cousin Lingyuan (played by Yokohama Ryusei). What will happen?