Yuuna Yunohana (湯ノ花 幽奈 Yunohana Yūna) is the titular main character of the series and one of the residents of the Yuragi-sou. Her real name is Genryuusai Tenko (天狐 幻流斎 Tenko Genryūsai), a member of the Tenko Family, one of the Three Big Families. She is later revealed to be a clone of Mahoro Tenko, Byakuei Tenko's daughter.