A hentai comic that is not the one pictured but similar. It's a chikan (train/subway grope) but her hair is shorter and in the last panel she is in the bathroom with 2 or 3 men in order to get her id card back. It used to be on pururin and i don't see it on tsumino. it could be on exhentai but i have not found it yet. It also could be by itself or with other random hentais in the same book. I have seen it in both locations.