Otto CHIKAN!

 is the fourth single released by Onyanko Club.

It was released on April 21, 1986.

Single Information

 * Catalog Number: 7A0575
 * Lyrics: Akimoto Yasushi (秋元康)
 * Composition:
 * Nagasawa Hiro (長沢ヒロ) (Track 1)
 * Tsuchiya Masami (土屋昌巳) (Track 2)
 * Arrangement: Yamakawa Etsuko (山川恵津子)

Tracklist

 * 1) Otto CHIKAN! (おっとCHIKAN!; Uh Oh a PERVERT!)
 * 2) Omoide Bijin (思い出美人; Memory of a Beautiful Woman)

Featured Members

 * 4 Nitta Eri
 * 6 Kihara Aki
 * 8 Kokusho Sayuri
 * 9 Nagoya Mika
 * 11 Fukunaga Satomi (Main Vocal)
 * 13 Utsumi Kazuko (Main Vocal)
 * 14 Tomikawa Harumi
 * 15 Tatsumi Rika
 * 16 Takai Mamiko
 * 17 Jounouchi Sanae (Main Vocal)
 * 18 Nagata Ruriko (Main Vocal)
 * 19 Iwai Yukiko
 * 22 Shiraishi Mako
 * 25 Yoshizawa Akie
 * 28 Yokota Mutsumi (Main Vocal)
 * 29 Watanabe Minayo
 * 32 Yamamoto Susan Kumiko
 * 33 Fukawa Tomoko