|Other names|| Leaks' minion|
|Sanga's instrument||His life|
|Voice actor||Makoto Naruse|
Firi is a young and thin boy with white hair and a pair of big red eyes. His outfit consists in a red, crimson and black suit. He also has a small sword with a skull on his handle.
Nothing is known about his origins but he follows Leaks with loyalty. He absolutely adores Leaks and respectfully calls him "master". He enjoys to taunt and tease others and let them know that Leaks has the authority.
Firi is seen to be very playful, appearing near Konoe and teasing him about not finding the correct location of his voice. He's very devoted to Leaks and will do anything for him.