Hiroshi, who was secretly in love with his mother, Natsumi, who raised him alone, wished for a little happiness, saying, "Let's stay together...". However, without knowing Hiroshi's feelings, Natsumi begins to fall in love with a man at work because she says, "It's about time I find my own happiness." Hiroshi suppresses his jealousy and sends him out on a date with a smile, but his feelings are not clear. That night, when I suddenly woke up, Natsumi and a man were intertwined at home. After spending a sleepless night in shock, Hiroshi calls Natsumi to her room the next morning.
