Briavel the sly

Sometimes being reincarnated in a new world would not be enough, people could make an error and would like to start again,  Briavel received this honor a few time, stuck in a time loop, after dying eight times, he learned many things but not enough to fulfill his mission. However, he's still decided to succeed this time. How? He doesn't know, but he will try to find a solution, after all, maybe the ninth time is the lucky one.