Becoming a Demon [Quick Transmigration]

No one knew how pure and beautiful Chang Jin had been at first. Just as everyone knows that in the end, he became like a blood-red flower blooming after drinking its fill of blood. He reached out a hand. A smile appeared on his beautiful, dreamlike face, fresh as a flower at dawn, touched with a faint sweetness. He said, "Hey, come and fall into this hell with me." Overall blurb: A quick transmigration story about a naive bottom who turns dark, then is redeemed. The worlds vary. First world: Be My Dog. Second world: Content warnings: 1. Contains a little yuri; the writing leans dark. 2. This is a writing exercise. The characters, pairing, updates, and plot direction are all subject to change, depending on my mood. 3. I'll try to update daily. Premise: