Preceding the TV series, the Kodomo No Omocha OVA is a thirty-minute animated video that showcases the events of the first volume of the manga. This aligns with episodes 1-6 of the TV series and showcases Sana's endeavors with Hayama in school, which were triggered by the "oyakodon baka" incident. The pinnacle of this video focuses on Hayama's father and sister coming to grips with their mistakes, thanks to Sana's intervention.