[@Dawn]
A connection of worlds; the ability to phase into other areas of existence was not a skill unknown to Issei.  Though use of the magics given to him as a pawn to the Gremory family under Rias, such dimensional transfer normally would not come to shock to him, the man who has traveled to Heaven, hell, and back. 

There was, however, a difference in the current transfer he had been forced into. Although pocketed dimensions can be created by the strongest of beings: the ancient dragons, they do not consist of a full "world", but rather a fragmented visage of a time long past. As such, the idea of there being a "world within an unidentified dimension" was a construct foreign to Issei. His knowledge of the occult might not have been the most intensive, besides the spells given to him through his peerage, however if he did in fact go through a dimensional transfer unknowingly, it was within a world he had no knowledge of. 

At the location if his spawn into this world, stood a  single girl. Perhaps she was the "master" of this world? If she was, to create such a dimension might have been considered a feat by most magic users he knew. However, he somehow doubted this was the case. Though she did have the "cunning look" of a caster, somewhere in his heart he understood this not to be the case. Though not exactly well endowed by any means, she did not bear the childish figure of a certain rook he knew. Even so, she appeared to be the same age as Issei in terms of appearance, though appearance does not mean everything. He knew of an eternal dragon with the visage of a child whom he could consider a "mentor" of sorts. 

"Errrr... Yo. How are you?" 

Smooth as a kitten, Issei rubs the back of his head as if to hid a bit of his ignorance from the other.  However, realizing the frivolousness of this potential conversation, he tries to redirect the flow of it before it had begone to take place. 

"Do you know where I am? My name is Hyoudo Issei." 

Issei would be considered to be somewhat of a carefree individual. Even a transfer of worlds was not something that would really "rattle his chain", as the idiom is. It merely brought upon him a bit of confusion regarding his current status. Because no hostile intent was detected from this girl, he decided it would be best to merely try to converse; an attempt to find out what is going on. 

"What is yours?"

...Of course, the girl in from of him, though could not be  considered "hot" to the degree that someone like a "certain queen" he knew, could be considered very "cute". He was not adverse to her current form at least. In fact, he considered himself blessed to meet such a cute girl, though such excitement was not currently the forefront of his thoughts, it was not like he could truly ignore such a promising prospect.