A minor [i][[Touhou]][/i] character appeared in [i][[Forbidden Scrollery]][/i]. 
It is a giant snake that ate a human and became a youkai in the Outside World. After being transported into Gensokyo, it started eating in taverns and pubs without paying for the food. Can disguise itself in various ways.

h4. See also:

Touhou Wiki: http://en.touhouwiki.net/wiki/Minor_Characters#Unnamed_Snake_youkai
snake youkai (touhou)