The Outside of Madness (狂気の外側) is the fifteenth episode of the Re:Zero anime.
- Ram and Petra's death is changed. In the light novel, Petra died at the village and Ram died in a room at the edge of the second floor. Also, Ram had no wounds on her body.
- Subaru finds Emilia's hair accessories and a blood trail on the ground which leads him to Roswaal's room instead of just heading their out of despair.
- Subaru hugs Rem, who's right next to him, while in the light novel he collapses after hearing and seeing Rem inside the shop.
- Rem doesn't argue with Ferris over his decision to stop treating Subaru.
- The scene where Rem discovers that Subaru left the Dragon Carriage and slept beside her was cut.
- The Rem vs Witch Cult members fight is shortened.
- Rem notices the Witch Cult member run off with Subaru, while in the light novel she doesn't notice until she realizes that Subaru and a Witch Cult member were missing.
- Subaru first meets Petelgeuse after regaining consciousness instead of seeing him while being carried into the cave. Also, Subaru was chained to the wall instead of later on.
- Petelgeuse's self abuse is shown off screen or censored.
- The Witch Cult member's voices are heard and have dialogue while in the light novel their dialogue is simply a dash.
- Rem's last words were censored while in the light novel she calls his name.
- Puck is mentioned to be a large as the mansion itself, yet his size was made smaller.
- Subaru's meeting with the shadowy person before regaining consciousness is cut.
- Ram is dead in the garden by the shed Rem tried to protect during Subaru's last life, while her death isn't mentioned in the light novel.
- Subaru's beheading by frostbite death is anime original as his cause of death wasn't mentioned.