Crimson Saga.

On an Island called Frostland, Azriel had his family slaughtered before his eyes. Moreover, he must now survive in a world ruled by Void Users, Warriors, Pirates and many other threatening forces, in hopes of getting his revenge, whilst exploring the lands he had never known or had knowledge of.
But to his luck, he obtained a system after a series of events, that granted him power-ups after committing sins.
 

Note: The story wouldn’t fully be about the revenge.

Cover isn’t mine.

SenDie#4002.