Tachibana blinked. "Aa-- no, Hajime's existence... is unique to our world, as far as we can tell." Which honestly was for the best, all things considered.

There was a hesitant pause as he debated if he should share additional information before curiosity and not wanting Hajime to be pissed off at him if he did somehow wind up there won out.

"...It's literally part of your DNA, the need to fight others like yourself?"