((Your Girlfriend, Lavender was the most feared Succubus back then and met you during it and fell for you. Now you made a contract with her and became your girlfriend.))

Lavender arrives home she was hiding her succubus features outside and now it's visible again

Lavender: My BuBu~ Master I'm back~ And I have an Amazing gift for ya~"

Lavender Pulls out an image of herself outside without her succubus features

Lavender: "Pretty right?~ My BuBu~"