Mer dratchrod with breast kink & lactation kink?
Sorry for the delay, Anon! I wanted to linger over this a bit. It also was such a nice tie-in with this anon I got as well. I imagine them in the same universe.
So Dratchrod has been together for a while and raised the pups. Drift and Ratchet never manage to carry, but they get to knock up Rodimus plenty. Something they are all excited about when it happens.
The thing is they are different types of mers and Ratchet may not be carrying but after regular being around a mate and pups his body preps to support them as both parents lactate in his supspecies as well as pod members to support others. Rodimus's pups, though, while they can drink, don't usually have a latching instinct and are mostly ready to eat fish immediately. Only a handful inherited enough from Ratchet to need it.
But Ratchet is producing more than enough to support their large clutches but with no way to rid himself of it, leaving him swollen and grumpy. Even after they grow he has to deal with them as his body never calms down.
Rodimus and Drift, who distinctly do not come from subspecies that lactate find Ratchet's boobs fascinating and attractive. They both love touching and squeezing them, feeling how they jiggle and how soft and strained they are. They are both very curious about the taste.
So when they are playing around and squeezing just right, Ratchet groans and the filtered Energon comes out. Rodimus licks it up to taste and licks again and then just latches on and sucks hard enough to make Ratchet squeal when the pressure starts to blissfully eases.
Both his mates recognize what kind of sound that is, and Drift doesn't hesitate to latch onto the other one. Both of them are squeezing and massaging as Ratchet writhes and moans, slit spiraling open eagerly. Rodimus doesn't even hesitate to wrap his tail around and release his spike he's used so rarely lately and start pounding while Ratchet bucks and keens wet and ready and warm. Ratchet can't focus cursing and using his own hands to hold both of them firmly to him.
Drift starts growling and biting, never letting go make Ratchet his and mewl at the edge. Drift is frustratedly rutting against Ratchet's tail, trying to shove Rodimus away list in pleasure. They both are bumping, and Rodimus shifts enough that Ratchet's slit is usable and Drift ruts in slipping in beside Rodimus's.
They both scream, and Drift is rougher, wrapping a clawed hand on each of their waists and shoving them together while he pounds away.
Rodimus overloads first, weakly suckling Ratchet's throbbing nipple but he can't escape, opening his mouth to sob and keen snuggling into Ratchet's chest but never actually trying to leave despite the oversensitivity.
Drift can keep going for hours a penile bone, keeping him hard and allowing him to overload multiple times, and he intends to fuelled by the energy from Ratchet's milk and tge frsh fertile scent of his mates
Ratchet, meanwhile, has lost track of his overloads since the first one when they bothed latched and is eagerly milking tgem both as Rodimus quickly recovers despite his sobbing.
They all finished with Ratchet drained, and boobs prettily covered in love bites, all of them satisfied and looking forward to the next time.