Do we know anything about who's sending them? Sorry if I'm asking a lot of questions

[Yu would understand Akechi's hesitation in going somewhere with a perfect stranger. Probably. It's Yu, after all. He frowns when he hears what happens to those without color...]

Ahh...that's terrible.

[Yu already looks like he lost half of them with his grey hair and eyes.]

I don't think I could do that to anyone, then.

[Mentally, he's going to cross out that quest.]