Dragon Ball: Black Christmas Pt1 (Pixiv Fanbox)

Here's Part 1 of what I'll call, Dragon Ball: Black Christmas! To tie a loose plot together, Android 21 and Bulma are taken as presents for a certain man. What will they get up to when they're finally "opened"? Find out on the next exciting episode of Dragon Ba- Anyways, I'm aiming for 4 parts hopefully, which is why I'm starting so early lol