The real reason they suddenly rushed into the room...　#anime

Grim Reaper Flag-Chan! -plot- Mob-o, a completely average boy, one day suddenly encounters a mysterious girl. However, she was no ordinary girl though, she is Death Flag, a Grim Reaper! As it turns out, the world Mob-o lives in was actually a virtual training ground created for Death Flag, who has been repeatedly failing her missions. And Mob-o? He's simply the practice dummy. Can Death Flag finally become a proper Grim Reaper? And will Mob-o manage to avoid his death flags? Produced with the support of IP360, implemented by the Ministry of Economy, Trade and Industry (METI), Japan. ©Plott Inc.