[Kaderin Triste]

It's pretty well hidden in the FAQ thread in the help forums.
The exact information is this:

How many Mules can I have?
There is a limit of two mules on Trisphee. You may have your main account as well as two mules. Multiple people in the same household with the same IP address may have their own accounts and their two mules as well. Pretending to have family members on Trisphee just to gain more mule accounts is not allowed.