Torka - トーカ

Torka is Lyza's husband and Riko's father. He was one of the members of a survey team ordered from the government, with a special mission to retrieve the Greater Artifact Unheard Bell from the 4th layer of the Abyss. Lyza married Torka when she was a White Whistle Delver, while Torka was a Black Whistle Delver.