@thornedesires dragon!Thorne
Dragon matchup!
Your castle/cave is a mixture of metal and roses. Bouquet after bouquet of dried roses hanging from the ceiling along with mobiles of keys. You’ll always have a soft twinkling noise in your home. Anyone entering will have to be very careful not to trip on the piles of keys (wonder what they go to?). Also mind the potted roses, they have thorns! Random music boxes would be strewn about as well. It could be a game all on it’s own just finding them, then figuring out where the song was from. Did I mention the games? You got them all!
Other than watering your roses and pruning them (pruning taking the most time), you wouldn't really have much to maintain. You would have to take the time to hang roses to your ceiling for them to properly dry and once you find the perfect group of keys, you can finally make a new mobile with them.
If you are an earth dragon you will feel right at home amongst the roses and metal from your keys. You’ll constantly feel like you’re surrounded in a big blanket when you are home.
A dragon!Karamatsu would turn up! Most, if not all, dragons have a weak spot for music, this is very much true for him specifically. He loves the soft twinkling of your keys and the music boxes. And you have roses! Are you sure this isn’t his castle/cave?
He will undoubtedly help you with the roses. Not just watering them, he’d help prune them, winterize them, and even get his brother, Ichimatsu, to give him a hand in making a fertilizer for them. Key’s are shiny enough that he would feel like he’s surrounded by glitter but they’re small enough that he can’t spend time admiring them for too long. So he might have to go procure some items that fill that need, but he might just turn that need to have something to admire on you. You already have roses everywhere, why not get out the wine and make it a romantic evening?
Because Karamatsu kinda got him involved with helping your roses, dragon!Ichimatsu would turn up. Poison dragons would find your castle/cave comfortable since they are a mix of earth and fire. The earth dragon half would feel the blanket of comfort like you would and the fire half would like the metals around as well, but him personally would need some coxing to stay at your castle/cave. If you want him to stay, add fluffy items to your home for him to lounge about. Then you’d have a winner.
If you choose to have both of them to stay at your home, expect some arguments over your roses between both brothers. Roses may be an interest for Karamatsu, he has a decent knowledge on them but his views on their care will be different from Ichimatsu’s view. Just have some music boxes going, they’ll calm down. Or, have them play a game for them to channel their competitiveness.