He had already decided that when it was the time to leave, he would try to steal that knife. Since he was taking the knife, he would also leave some letters behind. The letter would just explain that his son was going out on an adventure. Since he was taking something precious from Mu Yun, he wanted to leave her with hope. He didn't want her to know that her son was dead.
Rise of the Demon God
Eastern · Demonic_angel
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