A young boy who loves to joke got transmigrated because of a joke. In the process of time travel, he learned that joking also depends on the person...
... I was wrong, I shouldn't have joked. If he didn't joke, he wouldn't have traveled through time. If he didn't travel through time, so many things wouldn't have happened. If so many things hadn't happened, he wouldn't have been crooked. If he hadn't been crooked, there wouldn't have been so much trouble...
In short, in one sentence, [I was wrong, I will never joke again, woo woo]