Reality begins to bend again. Whatever things Dirk used to bind your curse and Luke, it seems to be recalculating now that the curse has receded for the day. Dirk hums something you dimly recognize as a charm used to make wolves and dogs more cooperative (your family used it to keep younger cursed kids in check). Both you and Luke seem to fall under its sway even now, warm water and close quarters intensifying the power at work.
"There we go." Dirk says authoritatively as he and Luke begin to wash you, "I've spread the curse to ensure both of you are my dog boys for life. My hubby was the primary catch, but I'm not opposed to keeping some tools in good working order."
Dirk turns you around, and gently grabs your balls while rubbing his boner against your rear. Luke continues scrubbing your body, more sedate than seductive but still clearly into this.
"You're mine now." Dirk says, fingering you with his off hand and stroking your shaft with the other. He pulls out to grab some lube from the shower side while Luke takes over the handjob. Absentmindedly, you return the favor and ease your way into frotting with Luke and a sloppy lackadaisical kiss.
Dirk begins penetrating you, well-lubed and your body complying with supernatural ease. You relax onto him slightly, sandwiching yourself even tighter as Luke closes in from the front.
"Good boys." Dirk confirms, giving you a headpat and gesturing for Luke to turn around. "Okay, slave boy, knot up."
The command reverberates with supernatural effectiveness. You feel your crotch quiver and restructure as your penis takes an oversize wolfish form. It's still proportionate, but bright and knotted. Dirk pours a bit of lube on, sensations intensifying from the clash of temperature.
"Hubby, take it for a ride."
Luke eases himself onto you and now you're the middle of a fucktrain. Despite his stretching seemingly magically enforced, he's still tight even as he works his way down to your knot. Dirk passes his hands over your chest, but then has an idea.
"Both of you grow tails, I want something else to grab."
You are treated to seeing the slight deformation of bone and sprouting from Luke's lower back as you feel the same happening from yours. The wolf-tail is short, thick, and furry, but the subtle adjustment to your balance kicks in instinctively. Dirk seems to take a delight in playing with the base of your wagging tail, but Luke's is sedate. You give Luke a reacharound and he moans.
You continue like this for a time, building to orgasm. Dirk finishes filling you first, then orders "Both of you, cum now." and you clench as you absolutely creampie Luke. He eases his way off with a satisfying pop, and some more shower time is spent cleaning off in the afterglow. Your manhood sheathes itself and Dirk gives it a satisfied light flick, opting to keep yours wolfed for now. He's keeping Luke's genitalia human, perhaps for comparison perhaps for style.
Some cleanup later, Dirk has an idea while everyone's drying off. "Y'know, dogboys are in." he says. "There's plenty of muzzles for snouts, but the ear structure is something I want to see. Both of you, dog ears."
The crackle-like shuffling of biology as your ears deform and rise higher on your head is familiar. You swivel them experimentally, adjusting to the slightly wider palette of audio stimulus. Luke's ears are floppier, and he seems to take the mix of increased awareness and new position with curiosity. He wags his tail excitedly as Dirk gives him scritches behind the ears. One curious look later, you get your own stimulation.
"Alright, redressing..." Dirk thinks as he strokes your head. "Oh, I get it. I'll make people outside our little family treat you as a dog when you're collared and human when you're not. Problem solved, I can play with more transformations that way."
Fetching a black little padded collar for you, Dirk wraps it around your neck lightly and clasps it. You kneel to all fours instinctively, and bark jokingly only for it to come out very canine.
"You can talk, y'know." Dirk says with a smirk.
"Yes, master." you reply.
"Good boy." Luke says this time, ruffling your hair and patting your back.
Your master and his husband deal with laundering your old clothes, not yet bothering putting on some new clothes of their own. Master Dirk speaks a blessing of some sort: your body becomes more resilient while remaining soft, in his words allowing you to be on the ground for much longer without issue.
Since it's pretty late morning, they go back to bed and you lie down in your newly appeared dog bed on the floor.