Jelaskan "Rifujin Ball" dari Nagiichi dalam bahasa melayu

Team N: Kishino Rika, Kinoshita Haruna, Shinohara Kanna, Matsuda Shiori, Yamaguchi Yuuki

Team M: Ota Riona, Kawakami Rena, Kodakari Yuuka, Takano Yui, Hikawa Ayame, Fujita Runa, Mita Mao, Murase Sae, Yamagishi Natsumi

Kenkyuusei: Azuma Yuki, Ishida Yuumi, Uno Mizuki, Okita Ayaka, Koga Narumi, Koyanagi Arisa, Sato Sorai, Nakagawa Hiromi, Nishizawa Rurina, Hayashi Momoka, Hara Mizuki, Yamamoto Hitomi, Akazawa Hono, Ishizuka Akari, Ijiri Anna, Ueda Mirei, Umehara Mako, Oota Yuuri, Katou Yuuka, Kamieda Emika, Kusaka Konomi, Kushiro Rina, Kurokawa Hazuki, Kono Saki, Kobayashi Rikako, Sasaki Nanami, Sugimoto Kamo, Takayama Riko, Togo Sora, Hisada Riko, Miura Arisa, Muro Kanako, Yabushita Syu, Yamauchi Tsubasa