There are like a lot of scenes but it's kind of --- not vanilla???? TL;DR: Twin is in love with his twin, and fulfils his desires by having sex with lots and lots of other people. Didn't sit right with me.. but if you're into this psychological stuff, a good read, but the story got discontinued.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
Afurete Shimau