My son, Manabu, lost my husband when he was still a child, and since then, we have been living together as a mother and son. As Manabu approaches 20, he is becoming more and more like my husband, and as a mother, I feel joy at his growth, but as a woman, I also feel sad at seeing his resemblance... Then, on the night of his 20th birthday, we shared my son's first drink. I'm not very good at drinking, but that day, the alcohol tasted so good that I ended up drinking too much. Then, perhaps because Manabu was drunk, he started acting strangely clingy towards me...