Shuudan Chikan Densha
English title: Gold Throbber
Japanese title: 集団痴漢電車
Type: OVA
Episodes: 2
Source: Visual novel
Genres: Hentai
Studios: Y.O.U.C
Producers: Digital Works
Duration: 26 min per ep
Rating: Rx - Hentai

Yuji is a young businessman with a penchant for groping women on the train. Unfortunately, he's really bad at it... His hobby is about to land him friendless, homeless, and probably behind bars. Enter the dashing hero, Kazuo, the man with the Golden Touch, any woman he touches turns to be horny! Touched by Yuji's plight, Kazuo takes him under his wing and teaches him to score with any woman, anywhere, anyhow.

(Source: AniDB)