Ah, what it was like to be lazy. Nice, calming, serene...boring, mostly. There wasn't much to do around here, but since most of his siblings didn't care for human contact that much, they tended to live outside of their world, all off on their own. Ruko never really understood it, but he guessed it had something to do with their agelessness. It could get a little annoying to try and explain away when living in the same city with the same people for years at a time. The humans would always get confused by their appearance. While the humans changed by the day, him and his family never looked any different. Humans were greedy creatures...
Squeak. "Oh, a mouse." Ruko turned over from his back onto his stomach, resting his chin in the palms of his hands as he stared down at the creature. The mouse scurried across his wood-floored room, back and fourth, as if it were looking for something. Ruko wasn't really phased by seeing the creature, though. He wasn't a girl. He could handle a little mouse. Although, if he just let it roam around his bedroom as it pleased, it might wait until he's asleep to crawl in his mouth and eat him alive from the inside out. He heard once that mice like those kinds of things. Or was that rats? Eh, close enough.
Now that he was starting to get nervous about the evil little creature wandering his room, Ruko got to his feet and stayed close to the wall. The mouse stopped running around for the moment as it realized it wasn't alone in this big room. It stared over at the demon boy for a good, long moment as he froze and wished he could disappear through the wall, before moving around again. Ruko shuddered and quickly slipped out of his room. The second he left, slamming the door behind him--that room could never be re-entered!--he got a strange feeling. It was almost familiar, nostalgic, and it brought a warm smile to his face despite the drastic situation he just got out of. But, in another moment, it was gone and he remembered what he was doing.
His feet loudly padded against the floorboards as he ran down the halls, through the main room--not even noticing Silvia or Mukuro standing there even though he passed right between them--and down another way until he reached a door, banging loudly on it. "Yuuuukaaa!" he called loudly, still hitting the door. Who else could he go to with this? Certainly not one of the girls! He was a manly man. He couldn't embarrass himself like that! Which is why he needed Yuka to go and remove the mouse for him instead. "My life depends on it! Yukaaa! Open the door! Please, we have to leave soon!" He paused, blinking. Where did he get that idea from? Oh, right, he remembered the feeling now. But, still, first things first. "Come on, come on! Hurry!"