Tsubaki Yuina

 is a member of Yumekawa Days MONSTER and a former member of Marbles. She joined Marbles on December 6, 2016. After the group's disbandment on April 19, 2017, she joined Yumekawa Days MONSTER (then named Yumekawa Crown TOKYO) in August.

Profile

 * Name: (ゆいな)
 * Nickname: Yuttan (ゆったん)
 * Birthday: October 1
 * Birthplace:
 * Zodiac: 
 * Blood Type: B
 * Member Color: (Yumekawa Days MONSTER),  (Marbles)
 * Hobbies: All games, getting tested on mushrooms
 * Skills: Flute, handicrafts