On September 4th, 2015 it was announced that she would be graduating from the group following the release of the original single to pursue other projects. However, while still participating in "Platinum de Somete", she officially graduated on September 16th 2015.
On January 3, 2016 she was announced as the leader and new member of the group MilkyWays.
About HoshikoEditVocal Range: Alto
Personality: Your favorite tsundere
Image color: Rose
Birthday: October 8
Interests: Instrumental music, writing lyrics, and Tokusatsu shows and movies!
Favorite Season: Autumn
Favorite Food: Pasta
Least Favorite Food: Seafood
Catchphrase: Let me be your star! I’m MilkyWays’ leader Hoshiko! Watch me shine bright!
Charm Point: My eyes
Symbol: The stars
Song Participation Edit
In Platinum Happy:
-First Single "Make it Platinum!"
- Make it!
-Holiday Release "Noel no Yoru"
-Holiday Release "Oshogatsu"
-First Mini-Album "Happy Hearts"
- Yarakai Heart
- Aishiteru Banzai
-Second Mini-Album "Cherry Blossom Season"
- Sakura Chirari
-First Original Single "Platinumで染めて！/Paint it Platinum!"
- Paint it Platinum!
- While in Platinum Happy she was nicknamed "Melo" or "Melomelo" by other members. After debuting with MilkyWays, Calla nicknamed her "Shikko."
- Made up the unit "Caramel" with Calla. The two were also the tallest members of the group before her graduation.
- Plays several different instruments.
- Has a personal Youtube where she posts covers.
- It was revealed via YouTube that she had left Platinum Happy to be the front man of a new group, MilkyWays.
- Her image color in MilkyWays is rose pink, but was purple in Platinum Happy.