Yuna Momose is one of the main heroines of Yuri Tama: From Third Wheel to Trifecta. She is Rinka Aiba's best friend since childhood. Both of them fall in love with Yotsuba Hazama. While Yuna acted competing with Rinka for Yotsuba's love and affection, Yuna was actually happy that Yotsuba was dating Rinka, and agreed to let Yotsuba date both of them. Yuna is the first to confess, and thus, she is Yotsuba's first girlfrien