Rima's mother, who raised her alone, remarried. I should be happy...but I should be happy... That person turned out to be her first love, her homeroom teacher... A feeling of jealousy swirled around me from the day I found out. Memories from my youth that I wanted so much but couldn't get because of the relationship between teacher and student. Regret for the teacher who didn't see me. Anger towards her mother who has a woman's face.