Had this come from somewhere else then from Japan I woulda said WTF as well

.
I mean, Japan seems to be the land where your fantasys get fulfilled.
There's bondage and rape porn, where the girls are tied up and screaming, but that's all an act

. I was super shocked when I payed for a "special" card in the hotel lobby to watch the Porno channel once I got home from my day out in Tokyo

.
And they had 2 prono channels, 1. Cherry Channel- Normal porn basically, just couples having sex, 2. Yellow channel- Bondage, rape fantasy porno, and some other bizzare stuff.
and Japan has many other things that can fulfill a mans fantasy, such as Maid cafes, Soap Bubble massage parlors

, Rape/Bondage porno, Cosplaying....So this new Groping Subway thing is no big surprise to me, another way for a man to safely play out his fantasy.

EDIT: And...maybe if they allow foreigners in, I might very well check this place out next time I go to Japan.
