Ten years ago, she divorced her husband and raised her son alone. Her son, now employed and living independently, refused to leave home, spending his days off in bed. To get him out, she invited him on a hot spring trip. "Do you have a girlfriend, Masakazu?" "Yes... right here in front of me..." He couldn't stand on his own because he loved his mother too much. "Just for today..." They made a one-day pact to comfort him. His love was released into his mother's vagina.