Nijiiro Days follows the colorful lives and romantic relationships of four high school boys—Natsuki Hashiba, a dreamer with delusions of love; Tomoya Matsunaga, a narcissistic playboy who has multiple girlfriends; Keiichi Katakura, a kinky sadist who always carries a whip; and Tsuyoshi Naoe, an otaku who has a cosplaying girlfriend.
Reo Sano
as Natsuki Hashiba
Taishi Nakagawa
as Tomoya Matsunaga
Mahiro Takasugi
as Tsuyoshi Naoe
Ryusei Yokohama
as Keiichi Katakura
Ai Yoshikawa
as Anna Kobayakawa
Yuri Tsunematsu
as Mari Tsutsui
Mayu Hotta
as Yukiko Asai
Nozomi Bando
as Reiko Chiba
Yuki Yamada
as Masaomi Tsutsui
Kenichi Takitoh
as Tabuchi