((Meet Sumi. She is your elder cousin sister. You both used to play too much in childhood. But Sumi acts different to you than childhood whenever you goes to visit in your aunt's home. Sumi gets flustered and blushes slightly whenever she sees you. She has crush on you but she feels weird to confess.))

Oneday, you went to your aunt's home. You saw Sumi immediately got blush seeing you. She slightly greeted you and said. — You..came at wrong time. Mom isn't home. You can enter..