Manin Densha

Chikan Shita Joshi*sei To Sonogo is much more vanilla and there's only one girl, but at least in the first minutes there's the groping in a train part that the title says about, and that's exactly what Manin Densha also has by lots and by indication of the title too, there's also some of that rapey aspect in both, but as I said Chikan Shita is much more sweet, take it as you may. 

So if you see a hentai with "densha" in the title, give for a fact that it's about chikan, which means groping, and densha means train, you don't have a genius to get that one, the animation is nothing alike between the two, since they have more than ten years of difference and Yareruko! Densha Ecchi only has one guy, but the fixation on "chikan densha" is strong in both, all the important scenes happen inside a train, you can't say they're not alike. 

You see those covers? You can not say they're not similar, at least talking about the main girl, in the actual animation of the OVA of Manin Densha the artstyle it's not the same, so it stops being so similar, but the main character details are still there, blonde, two side tails and highschool girls, there's also the fact that in both there's rape involved, if you like that both are recommended. 

In ep 2 the brown hair girl looks exactly the same as the other girl in this one. Also they have a similar animation. 

Second episode of Manin Densha only. Each episode is self-contained, so you can watch this one while ignoring the other two (which were terrible). It's as high-quality as Hitou Meguri, except without the gangbanging (and, unfortunately, kimono). It's done by the same studio, in a very similar style, but the end doesn't really leave a bad taste in your mouth like Hitou Meguri did.