If anyone ever rooms with Sanzo it 's usually either you or me , and the only reason Gojyo 's ever really done it before was when I was hurt bad and you needed to stay with me . " Hakkai 's smile never left his face but Goku could have sworn he was starting to look a little nervous .
Question: Why are the potential roommates of Sanzo being limited ?
The answer to the above question:


Sanzo is tough to room with .