(Conquest) Working Hard to Replace the White Moonlight

As someone who loves games, Nian He never imagined that one day he would transmigrate into the Detective Conan crossover universe.

Oh, so you think you can fool me because I haven't watched Conan?!

Fortunately, whether with Shinichi or Conan, he isn't in the same grade as either of them. Instead, he grew up with a top student who loves games, Tsuchima Mai. The two of them forged a deep friendship through gaming.

When he was fifteen, Nian He got the chance to take part in the simulation game "Cocoon" thanks to his parents. Then everything changed...

Nian He: Can someone tell me why I didn't end up in the Age of Discovery or as Jack the Ripper in Baker Street, but instead got sent to the virtual world of JX3, which gave me serious psychological scars in my past life? And who the hell decided I have to randomly trigger romance routes with seven big shots, replace the person they hold dear as their new beloved, and only then get out of the game?

Why are all the big shots I'm romancing men?

Do I really look that much like a gay guy??

And most importantly, why, after I finally succeeded, did getting out of the game send me to the world of JX3 instead???

Nian He: Xiao Mai, I'll never tease you about being a shut-in again. You're the one I love most, my true beloved!

CP: Heh.

Detective Conan and Himouto! Umaru-chan feature only briefly. The story mainly focuses on JX3. The male lead hates feeling controlled, so he doesn't sleep with or fall for any of the seven men while pursuing their routes. His romantic partner isn't one of those seven, but a mysterious cross-dressing big shot who retains his memories and identity, a bug in the System.