I want to fuck Ume-sama and take responsibility.
You mean get fucked by and be taken responsibility of.
What would sex with Ume be like?
Ever thought how light your mind would be if you were in heaven? Ever thought how heavy and painful your body would be in hell? It's those two. It's a mixture of pain, ecstasy, pleasure, blight, happiness and enlightenment. Remember the girls in the frame doujin? Think the reverse; you'd probably pass out once she puts it in, and you'd empty yourself at that moment. By the time you wake back up again, she's waiting for you; maybe she'd get angry and hit you, or maybe she'd embrace you and wait until you feel better. Who knows? It's something we all want to know, but may never experience.
reverse-goog just takes me to other archived /a/ threads.
Skimmed them but didn't see a title.
I want to have sex with her against her will