Korashime
English title: Punishment
Japanese title: 懲らしめ
Type: OVA
Episodes: 2
Source: Visual novel
Genres: Hentai
Studios: Y.O.U.C
Producers: Digital Works
Duration: 30 min per ep
Rating: Rx - Hentai

Professor Kayama could have been happy with his job, except that all of the students on campus hate him…and he hates them. Miki Watase is a dark-haired vixen will do anything to raise her grades, but when Professor Kayama refuses play along, she’s determined to have revenge. She gathers her friends – the luscious Hinata, the slutty Arisa, and the beautiful but timid Sachie – and they mix drug- laced alcohol with a snap-shot camera to publicly humiliate Kayama.

However, these vivacious little co-eds are about to discover that even a wimpy professor like Kayama has his limits. Now he’s going to teach them a real lesson in humility that will have them each begging for forgiveness.

(Source: AniDB)