Sana crashes into Hayama's life with the force of a kid who refuses to let a rich boy's broken home stay broken. The OVA packs six volumes of manga into thirty minutes without losing the emotional gut-punch: watching a nine-year-old actress use every trick she has to make adults see what they're doing to their own son. By the end, Hayama's father understands his mistake because a child forced him to look.

Sana runs into trouble with a boy named Hayama at school, and the conflict stems from an incident the source calls the 'oyakodon baka' situation. As things come to a head, Sana's efforts lead Hayama's father and sister to recognize the mistakes they have made. The thirty-minute OVA mixes comedy and drama and was produced before the television series. It adapts the first volume of the manga, roughly the same ground as the first six episodes of the TV run.