Rei Kagami (Ryosuke Yamada) is a billionaire and the CEO of the leading conglomerate company Kagami Group. He is an extremely smart inventor, who has developed revolutionary products, and is now doing research on high precision AI. When he was little, he was a curious and kind kid. As he grew up, his curiosity remained, but he became self-centered. For certain reasons, he begins to teach at a school, while hiding his identity as a billionaire and the CEO of Kagami Group. His performance as a teacher is quite poor compared to his excellent work as a CEO. He is incapable of understanding the ordinary lives of the teachers and students around him.
as Kagami Rei
as Serizawa Ichika
as Todo Makiko
as Nishitani Sho
as Takenaka Tenju
as Suzuki Tsukasa
as Umeno Himeka
as Konno Naoto
as Todo Yukimi
as Joshima Yu
as Matsushita Rina
as Mitsui Hikaru
as Mizoguchi Nobuo
as Dobashi Junpei
as Sakai Miyako
as "Teach"
as Kagami Osamu
as Emoto Maki
as Harada Nonon
as Makime Hotaru
as Nagumo Yusaku
as Kawabata Miki
as Osugi Minami
as Fujimoto Kisaki
as Kusakabe Ryuta
as Tamaru Hajime
as Saito Honoka
as Okamoto Ikoi
as Hashimoto Komichi
as Banba Kaede
as Harumi Masashi
as Aiba Nene
as Kotobuki Jin
