• [1999.12.22] Date of birth – currently 19 years old
• [2017.04 – 11] Took part in Miss iD2018 – Won “Most Photogenic” Award
• [2017.10] Worked as model during and after Miss iD – Under the name Tsukino Yuki
• [2017.10] Twitter account – @iyashi_hoshii
• [2017.12 – 2018.03] Twitter account – @snow_moonfield
• [2018.03.12 – 18] WACK Joint Audition 2018 – Took part in the training camp under the name Yokoyama Hina
• [2018.04.17] Debuted into GANG PARADE and joined Twitter – @TSUKINO_GANG
WACK is IDOL 