I'm Cannon Fodder 007 Sent by the Immortal Realm

Shocking! A young woman transmigrates into a cultivation world, only to be talked into it by the sect leader and resolutely throw herself into the noble cause of infiltrating the Demon Realm.

A self-obsessed Demon Lord who can't read the room, a wooden senior brother who's too inexperienced to stop people from swindling him, and a Demon Realm protector who's all bark and no bite have all extended invitations to her.

When her undercover identity is exposed, she plays the fool, hoping only to keep her whole body. Never in her wildest dreams did she expect the Demon Lord to be into that sort of thing!

Du Ruo: Sorry, I'm an undercover agent sent by the Immortal Realm.

Du Ruo: I didn't have a choice before. Now I want to become a demon.

Demon Lord: Good. Be with me. I'll be the demon, and you'll be my queen.