what truly is insanity?

If you asked him to name 50 ways to die. Naegi can give you 100 ways, in 5 minutes. Thanks, 78th class. He's been blended, gutted, stabbed, crushed. Thanks, Kirigiri. Eaten, frozen, drowned, hit on the head, poisoned, sliced in half, suffocated. Once again thanks to the 78th class. Living in a never-ending time loop is an experience Naegi wishes he never had experienced. But, with the power of hope and friendship, he can surely get through this. Right..?