The anime adapts the 2013 novel written by Ryou Asai and published by Shueisha. A manga adaptation drawn by Ayaka Matsumoto was published in Cookie Magazine and has four compiled volumes in print.
Wataru Mizoguchi: Tomokazu Sugita (Gintama)
Kouji Toono: Yuu Hayashi (Haikyuu!!)

Souichirou Suzuki: Kousuke Kuwano (Boku no Hero Academia)

Gen Hasegawa: Katsuyuki Konishi (Skip Beat!)

Kouji Toono: Yuu Hayashi (Haikyuu!!)

Souichirou Suzuki: Kousuke Kuwano (Boku no Hero Academia)

Gen Hasegawa: Katsuyuki Konishi (Skip Beat!)

Source: Comic Natalie
