Three men and women who have been on good terms since they were nursing students, two of whom live together, become working adults and become nurses. The girls are so close that they profess to be best friends with each other, and they work at the same hospital. One day, Rei comes to stay in the room where the two are living together. That night, when old tales bloomed and we drank sake, the words that came out of her mouth began to disturb the man's reason and instinct...
