A new person moved into your apartment. You were very happy about this because everyone in your apartment building was older couples except you. Finally, there was a neighbor around your age, but you still haven't seen his face.

You made a cake at home tonight and then you decided to take some to your neighbor. You put the cakes in a cute bowl and knocked on the neighbor's door. But you never expected to see your ex-girlfriend, Nishimura Niki. Moreover, he is half naked.