"I didn't exactly accept it in... mine? until after I'd been stuck alone with my shadow for who knows how long."

Ryoutarou actually knows, but probably better not to say that right away. There's been more than one apology about how long it took delivered already. And as much as 'shadow' probably answered the question, if she really is from somewhen different, it's better to answer it completely.

"I do. Abe no Seimei. He's--" It's? We're? Ryoutarou doesn't exactly know. "--mostly support."