|Other names||Leaks' minion|
|Sanga's instrument||His life|
|Voice actor||Makoto Naruse|
Firi first encounters Konoe in the forest and comes to tell him about his power of empathy, demonstrating this by having Konoe see the memories of a bracelet and a necklace.
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.