Summerstar (サッマスター, Sanmasutā) is a planet located some light years from Earth and is the home planet of Ayako Kuroki. Nothing is known about this planet. This is a reference to the real Kushiwagi Yuki's birthplace of Sagoshima, which is known for it's tropical climate.
|Lancastar • Kasumigastar • Baltistar • Funghistar • Sagittariusstar • Tundrastar|
|Entertainment Free||Akibastar • Kazakhstar • Eurostar • Uwarastar • Naniwastar • Sebustar • Bananastar • Maiamistar • Okutamastar • Nikkoustar • Summerstar • Saharastar • Atamistar|