Travel Through Time, and Then Be Contracted by the Devil

I've traveled through time. I don't know why, but I traveled through time anyway. After all, looking at the white-haired girl with double horns and the medieval-style interior decoration in front of me, I can only think that I have traveled to a different world like in some light novels. "How is life in the world over there? But it doesn't matter anymore. Since I brought you to this world, I should be your master." The girl in front of me said this. "What kind of thing is this person talking about that doesn't match the preface to the subtitle?" I thought to myself. She walked towards me slowly and kissed me without saying a word. "This is how we sign the contract." The corners of her mouth raised slightly, and then she left without looking back. So what else did I say? This life is yours.