"The Sadistic Guy Who Picked Me Up"

"Oh! Success!" I was in the classroom just a moment ago, but before I knew it, I found myself surrounded by a cosplay group—me, an ordinary girl, and Tofukuji-san, an incredibly beautiful girl. It seems we've been transported to another world, but Tofukuji-san was taken away by the cosplay group who called her a "Holy Maiden"... leaving me behind. Are you serious? I was thinking I'd been transported to another world and abandoned... when I was picked up by this ridiculously handsome man named Eden and became his possession? ※A story about an ordinary girl caught up in circumstances (slightly masochistic) and a somewhat rough-looking but handsome man (slightly sadistic) in an lovey-dovey or doting romance (planned)