A fun premise: what if I get isekai-ed into a freaky BDSM yaoi novel... But I liked getting kidnapped and confined? It makes the whole non-con stuff get really fun and sexy, plus it's a humorous twist.
All in all I really enjoyed, but I feel like there were some plot hooks that got abandoned along the way. What about the original protagonist? It felt like he was set up to be an antagonist or an obstacle in their relationship but in the end he did nothing. Some parts feel rushed and the BDSM parts could've been more in depth. Anyway it was an enjoyable ride.
Secretary Jin's Confinement Diary