[Mosaic removal] 'Ichika', a childhood friend who has lived in the same apartment since she was little.As she grew up, she became estranged, but 'Ichika' suddenly proposed to drink with her on her 20th birthday.The first time I drank alcohol, I didn't know how to drink it, and before I knew it, both of us got drunk.I inadvertently reveal my true feelings and confess. 'Ichika' accepts that she is also drunk.For us who have grown up, sex just once is not enough, and the morning comes as it is.