Torka

 Torka is Lyza's husband and Riko's father. He is one of the members of a survey team ordered from the goverment, with a special mission to retrieve the special relic "Unheard Bell" from the fourth layer of the Abyss. Lyza married Torka when she was still a white whistle while Torka is a black whistle. Torka died due to an attack from a repeated run-in with delvers from other countries. He is highly proficient in cooking.