ANYONE?
[Ciaphas Cain gets a few loud clangs against the door to his room more than just a knock, the fancy rings around an older Eridan Ampora's fingers causing the sound that occurs even though he hadn't exactly meant for that to happen. Oh well, that's what he gets for not adjusting the rings on his fingers.
Think about it this way: Eridan knocking alone says a lot about how much he's mentally grown in Marina let alone physically, not that it doesn't stop him from simply opening the unlocked door right after he knocks before the Commissar can get a word in otherwise. That's just how Eridan works, after all he's too big now to fit into the vents. Other than the taller height that rivals Cain's own, his zigzag horns have grown all the more taller as well above his head. Quite attractive horns, if he does say so himself --
He marches his way right into Cain's room, his much longer cape trailing in after him as he then turns to close the door behind him and locks it, no way was anyone else about to come in. Even though Cain looks to Eridan like he was waiting for someone to arrive, they were all going to have to deal with it. It's been how many years they've been in this prison, Cain should have been expecting this to happen.]