High School! Kimengumi
Premiered on "Yūyake Nyan Nyan" on 16 December 1985, and released by Canyon Records on 1 January 1986, Onyanko Club member number 4 Eri Nitta's first solo single "Fuyu no Operagrasu" debuted at number one on the single chart and remained number one for the four consecutive weeks. The number of its sales exceeded that of any of Onyanko Club-related singles released earlier. On 21 January, Ushiroyubi Sasaregumi's second single "Banana no Namida" was released by Canyon Records. It debuted at number one on the single chart and was used as the ending theme of Fuji TV's anime "High School! Kimengumi". In the same month, Onyanko Club member number 8 Sayuri Kokusho started performing her first solo single "Valentine Kiss" on "Yūyake Nyan Nyan". Two Onyanko Club members Mako Shiraishi (number 22) and Minayo Watanabe (number 29) were selected as backing vocals for the single. Released by CBS/Sony Records under the name of "Kokusho Sayuri with Onyanko Club" on 1 February, the single debuted at number two on the single chart.