phenomen a book

Kagayaki Sora, a NEET, pessimist, and a loner. He died saving a girl from raper and has revived back on the otherworld. He swear that he will be a better man and live to the fullest as thanks to the God that revived him back and give him a will to move on. Will he be able to succeed what he dream of? Or will he meet despair and fall into the depth of darkness awaiting for him?