There is a guy living in a house inside a tree with huge library. The first responder cells will call him by phone and he will check the library for what to do.

There is a guy living in a house inside a tree with huge library. The first responder cells will call him by phone and he will check the library for what to do. Disclaimer: All I know about this comes from Cells at Work/Hataraku Saibou. (https://en.m.wikipedia.org/wiki/Cells_at_Work https://en.m.wikipedia.org/wiki/Cells_at_Work!)