Tensai Ikkyuu (壱級天災) is a main character in Nanana's Buried Treasure, voiced in Japanese by Kana Asumi. The series' music includes "【MAD】Ryuugajou（Nanana's Buried Treasure龍ヶ嬢七々々の埋蔵金OP ）", "Ryuugajou Nanana no Maizoukin - Ending HD Creditless".
