Ryoma is definitely a cuddle monster when he’s sleeping, like totally has his limbs all tangled around Xander like an octopus. He might start off with plenty of distance between them when he first climbs into bed, but he always turns into an octopus once he falls asleep.
Which Xander doesn’t mind all that much because it’s kind of cute but one time Xander wakes up in the middle of the night and has to pee but Ryoma is clinging to him like a barnacle and Xander tries to wiggle out of his arms without waking him but no dice, Ryoma’s got a death grip on him. So Xander is getting increasingly annoyed and finally tries to wake the big lug up. Let go of me right this minute you idiot, I need to use the lavatory. And Ryoma does…kind of wake up? But he’s barely conscious and he’s so warm and comfy and doesn’t want Xander to leave so he’s just like ‘nah lol you can hold it ;)’
At which point Xander loses his patience and elbows Ryoma in the chest so hard he almost cracks a rib. It does get him to let go, though. Ryoma has to sleep on the floor for the rest of the night as punishment.