0-sen Hayato Pilot
Japanese title: 0戦はやと 奇襲
Type: OVA
Episodes: 1
Source: Manga
Duration: 23 min
Rating: PG-13 - Teens 13 or older

The pilot episode of 0-sen Hayato released only on VHS and Betamax. Chronologically it is considered the 1st episode of the franchise.