phenomen a book

An boy, uninterested in life wakes up one day with a system, even though his main intention was to pass his life and lowkey as possible something tells him that he can no longer go on like he wanted to, troubles, fighting and a lot of weird thing will start happening whether he likes it or not, first armed with his above average wit and his most precious weapon, sarcasm, what kind of adventures will the world force into him so he can stop lazing around.