Although Hiro reassures her that he broke up with her, Saki, who still is in love with Hiro, holds a vendetta against Mika and hires a group of men to rape her. The horrific encounter ends with Hiro and his older sister Minako punishing both the men and Saki, but Mika continues to be harassed at school when Saki spreads rumors about her. Hiro protects Mika from all of the bullying advances, but she assures him that she's not frightened from being with him. Mika later becomes pregnant after she and Hiro consummate in the school library. Hiro is thrilled by the news and both of them gain Hiro's parents' permission to raise the child together, although Mika's parents disapprove of the action. Despite this, Mika is determined to have the baby. After an altercation with Saki, the baby's birth ends in a miscarriage. Despaired, Mika and Hiro build a grave for their baby and promise each other to come visit the memorial yearly on the day of the baby's death.
Shortly after their second year in high school begins, Hiro begins to distance himself from Mika and breaks up with her. Although hurt, Mika meets a college student named Yū at a gōkon, who becomes sympathetic to her situation.
The two date, and Yū even prevents Mika's parents from divorcing.