Iīm happy about what happened. Ranta is the best character in this anime, so him getting the spot light at the end was nice. I fully expect him to survive, maybe even defeat Dead Spots. He WILL activate his demon summon, since it was hyped up over the course of the entire show. If it takes this long to go into effect, itīs not unrealistic to be able to defeat a strong foe like Dead Spots.
Now I just hope the others give Haru some shit for leaving a comrade :P
And Shihoru should totally become Rantaīs cumdump, now that heīll have proven himself a hero. Look at how she grabbed his hand when he offered her help. Totally a couple, I tell you! :P