The art could have been a lot better. Aside from Rei, everyone else looks pretty horrid. Also sucks that Asuka isn't in this one, her making fun of Rei and laughing at or admiring her humongous cock would have made it 10 times more enjoyable to read. Meh, 5/10, Rei's cute faces and big cock make it a decent fap.
Update - Actually looking back, this artist is known for guro, so whatever that thing was that came out of Rei was probably an organ of some kind. Wouldn't recommend his other work unless you're really fucked up.