"Do you know the rumors about that mansion? In the wake of a certain incident in the past, all the families who lived there, He passed away. That's right, an incident in the heart. Then, if you enter the mansion with your family or lover, you will never be able to come out again. Such a rumor. Why don't you go?' The main character "Momiji" wakes up in an abandoned house. It was once a place where families were in their hearts. Tsubaki is frightened by the inexplicable event, but while being supported by his beloved dog "San-chan" by his side, Back at home: Find a way to get back to your daily routine. Take that step so you don't lose anything important.