[Reducing Mosaic]ROYD-113 On the night of our twentieth birthday, we were drunk and repeated internal ejaculation sex from sunrise until we ran out of sperm. Ichika Matsumoto

'Ichika' is a childhood friend who lives in the same apartment with us since we were little. Ichika, whom she had grown estranged with as she grew up, suddenly proposes 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. Accept whether 'Ichika' is also drunk. For us who have grown up, sex just once is not enough, and the morning comes as it is.