The shinigami winced as he began to yell, used to only hearing yelling voices from horrible elder shinigami with the power to slay thousands of mortals with a touch. As he began to ask questions she looked up, shocked, laughing nervously to cover her shock "O-oh...Well theoretically there is an infinite number, but I have only had 4 or 5 at once, and that was because I was trying to see how many would answer. Most of them atleast understand Japanese. I have noticed cats seem to be able to understand them. I don't...Well the one I summon most I call Lackey? I've seen some larger ones...I suppose some of them could be human souls, they are the embodiment of death as a chain to drag you away, similar to how shinigami are the embodiment of death as an inevitable force.  I think they eat ashes and dust...I once saw one eat lamp oil." she tried to keep up with his questions, having never really thought about the goblins, they were simply a shinigami's servants, she followed behind him toward his study to finish answering his questions. "So Boss, what're you going to work on?" she asked curiously, looking around at the study she never really bothered to look at before.