Assassin's Concentration In Another World

(Hiatus. Return date: Unknown) One day, a young, skillful assassin died in an assassination mission. However, he was given another chance but in order to claim that chance, he needs to prove his worth to the god reincarnating him. Eventually, he passes. Later applying to become an Adventurer, using the knowledge he retained from his original world and the magical abilities he gains, he will make use of them to protect the friends that he meets and destroy anyone that gets in his way. His journey begins and as he faces the danger that runs in front of him, he will be completely concentrated. ______________________________________________________________ Cover doesn't belong to me.