Concerto
Japanese title: CONCERTO
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Sep 28, 2001 to Nov 23, 2001
Duration: 30 min per ep
Rating: Rx - Hentai
Producers: D3, Mediabank
Genres: Hentai

A teacher uses rather unconventional methods to train his pupils.