These two are on one side of two extremes based on the mood. Vanilla, or hard core bdsm.
When its more Vanilla its just Giyuu with Rengoku bent over getting fucked into next week
When its more hard core it usually involves hot wax, nipple clamps, hair pulling, odd toys, specifically tentacle dildos, plenty of praise, plenty of soft kisses
Rengoku can be very loud but he doesn't really cry or whine too much. Its like entirely moaning.
Giyuu doesn't always think hes generally being rough. He kinda thinks Kyojuro is over reacting.
Kyojuro is good at bottoming, but hes better at being 'made' to bottom. AKA, getting Giyuu riled up and then acting like he's gonna do something. Giyuu usually then ends up pulling his hair and there us plenty of spanking.
There isn't much of like a punishment system, the closest thing is Giyuu getting jealous and then Rengoku has to pay for it.
When Giyuu gets jealous Rengoku just accepts hes not gonna move for several hours. Giyuu chokes him a LOT when he is jealous. He doesnt want anyone to hear Kyojuro.
Kyojuro slobbers. Its weird. Giyuu likes it.
Even though they arent very kinky all the time, Kyojuro still kinda drops every time after
*a drop is basically when someone comes down from a sexual high and they can get extremely emotional. Often involving crying or something like that. Its typical with BDSM because of things like over stimulation and such*
The sheets MUST be changed after. Neither can handle it.
Rengoku absolutely needs food after. His favorite is some sort of like...miso soup or something. Just something small (for him) to kinda boost his energy back.
They usually go to sleep immediately after if its late at night. If its in the day they take a good nap together.
Kyojuro doesnt like to admit it, but he really needs that nap. Not just because hes tired, but because he needs a little bit of reassurance.
Kyojuro really likes to sleep naked with Tomioka so morning sex is...common.
They rarely have quickies. They would MUCH rather saver it.
Giyuu thourally enjoys people seeing him a kinda the bottom in the relationship. Or atleast the one not so in control. Its funny to him. He knows Kyojuro literally bends to his every whim, but everyone thinking its the other way around just makes him giggle.