Hiroshi, a son who had a secret love for Natsumi, a mother who raised her with one female hand, wished for a little happiness, saying, "We're still together ...". However, without knowing the heart of Hiroshi, Natsumi begins to fall in love with a man at work, saying, "It's about time for my happiness." Hiroshi kills jealousy and sends him out on a date with a smile, but his feelings are not clear. When I woke up that night, Natsumi and a man were intertwined at home. Hiroshi, who spent a sleepless night in shock, called Natsumi into the room the next morning.