1^st OVA series

1^st & 2^nd OVA series

2^nd OVA series

3^rd OVA series

Mayo (soon)

**The OVAs were originally released and numbered separately. Pioneer's US release made no distinction between the two series. Therefore, for those with Pioneer releases, the first three episodes of the OVAs translate to the original 1^st OVA series, with the remaining six episodes translating to the original 2^nd OVA series. (Brief clarification: The 1^st OVA series was not written by Watase Yuu. It was created by the production company as a 'bridge' between the tv series and the 2^nd OVA series. The 2^nd OVA series covers original manga volumes 14 through 18.)