https://www.webnovel.com/book/angel-of-wrath_23647308605930705
Synopsis:
"If you live to seek revenge, dig a grave for two."
An 18-year old youth commits a good deed on the best day of his life, only for his reward to come in the form of an untimely demise. The otherworldly intervention of an interested onlooker saves his life, but not without a cost. He now struggles with what to do with his second chance, and wonders if he can shoulder the burden that was given to him. And before long, he'll have to decide whether dedicating himself to the pursuit of revenge is worth sacrificing all the other wonderful things that make life worth living.
((Anyone mind telling me if I can post my link to Fictionpress? For the benefit of those who got screwed over by WN's latest update, I mean.))