haii im looking for this manhwa(?) about a new sccubbus who was learning how to do her “...

haii im looking for this manhwa(?) about a new sccubbus who was learning how to do her “job”, i don’t remember exactly what the details where but she’d either use sex toys with men to get there essence which was her source of food and when she was done shed make them think it was dream!! any help would be awesome thank u!!!