'Ichika', a childhood friend who lives in the same apartment that has been with her since she was a child. As they grew up, they became estranged, but on their 20th birthday, 'Ichika' suddenly proposed to have a drink with them. I didn't know how to adjust the amount of alcohol I drank for the first time, and before I knew it, I got drunk with each other. - I confess my true feelings unintentionally. I accept that 'Ichika' is also drunk ... For those of us who have grown up, sex is not enough for us to have sex once, and we will greet the morning as it is.