Great Wonder Outlier

According to the Catholic faith, suicide is a cardinal sin, whereby the soul is banished to hell to repent for all eternity. That's not what happened when high school student Victor Vitus pulled the gun on himself. Returned from his suicide attempt unscathed, he is promised a way to reverse his dismal daily life by the spirit in the revolver-- a girl named Lira- in exchange for answers to a deadly incident that happened 14 years prior. Having returned from death, questions are all that remains for Victor. How? Why?

It's the beginning of the Outlier saga.