Noguchi Ruriko (野口瑠璃子)
Sekai / Wah Wah World / Gunjou sanka
Release date: December 08, 2021
01 Sekai with Hirose Daisuke, Kusunoki Tomori & Hatsune Miku
02 Wah Wah World by Ogura Yui, Akina & Hatsune Miku
03 Gunjou sanka with Ogura Yui, Akina,
Hirose Daisuke,
Kusunoki Tomori &
Hatsune Miku
04 Sekai (instrumental)
05 Wah Wah World (instrumental)
06 Gunjou sanka (instrumental)