[LEFT UNFINISHED] Another Castle (Bowser x Luigi)

Going to leave this unfinished, couldn't put my mind really to it, though I may come back to it with how much more potential than other ideas I've had. (edit: and now that the movie's out, lol)

Luigi was sick of being the tagging-along, happy-go-lucky sidekick in his brother's ridiculous adventures. After writing a few letters, though, he finds himself in a place he'd never before have expected. What must he do, then, to protect both his life and love... especially when the bad guy is his boyfriend? [cue YTP "gay Luigi" sound effect]

(cover art not mine)