Okay, so they're at an orphanage, sort of (weird one at that). Shouldn't Chiyou have dropped them off at most then? Having a guardian kind of defies the purpose of an orphanage, last time I checked (or well, one outside of the orphanage at least).
On another note, the series feels a bit too fast-paced so far. Considering we're only collecting missing body parts and going by the size of them, there shouldn't be too many of them, so I feel like there should be more chapters dedicated to each of them. Just take this chapter, for example: We just learned the details of the mission in this chapter and are already progressing through/past the infiltration stage. If you can even call this an infiltration, they just walked in there and introduced themselves...
In general, I think going too fast is better than going too slow and drag things out, but it still feels like we're glossing over a lot of things. Which reduces the story to pretty linear "retrieve body part x" missions...