Bugged System Of The Sword God

Xan, an average twenty-year-old, is sent to a fantasy world in an accident. Having read many such stories, he prepared to rule the world with whatever isekai cheat he would be given. However, his system fails to boot due to a God's error, and he receives nothing—ultimately living out his life as worse than mediocre. One day, beaten and bruised as usual, he falls off a cliff and is sent back into the past. This time, his system successfully activates. [+3 Sword Mastery] [Complete 50 vertical slashes to increase sword mastery] [You have reached rank 1 Ki Awakening Realm] However, even though Xan's system managed to boot up this time around, it seems to be bugged as it keeps giving him outrageous quests at random. [Q? EST: Slap the arrogant young master across the face Reward: B rank Ki Refinement Pill] [Q? EST: Entice the demon empress of the dark sect to your cause. Reward: (Skill) Mastery of the Heavenly Blade Rain technique.] Tethered to a destiny forged by a past he was certain he never lived, he is branded with the title of King Killer. His very existence an act of treason against the three empires and blasphemous to the gods he is destined to slay. Can he reach godhood before his forgotten past catches up with him? Survival is a lot harder when his bugged system's quest keeps putting his life on the line.