Louder! Can't Hear What You're Singin', Wimp! Cast Sadao Abe Riho Yoshioka Yûdai Chiba Kumiko Asô Eiji Kotoge Yuki Katayama Yuko Nakamura Shoko Ikezu Yoshiyuki Morishita Ryô Iwamatsu Eri Fuse Tetsushi Tanaka Suzuki Matsuo Yuki Yoshida Ryô Shinoda Mai Tezuka Tsuyoshi Onuki Ai Iwasaki Wako Andô Tomoki Kimura Asana Mamoru