It helps if they have a predisposition towards magic. To be honest, my magic that I teach apart from the filial spirits doesn't seem to be transferable to those people who come from a world without magic in general. But filial spirit magic and is easily accessible towards anyone, regardless of their home world having magic or not.

[ Helios will smile and look at the myriad of potential books as well. It wasn't a frustration but more of a goal to be met and achieved, or so that's what he felt when he first arrived here. Helios could tell that Ai was of a similar mind, and that she didn't look at all displeased about having such a large selection to choose from. ]

I suppose it would depend on what you really feel like reading at the moment. But, ah, that's all up to you for now. I-I'll just let you read through them, if you need any help feel free to ask. Oh! And my name is Helios by the way. It's been a real pleasure talking with you.