The Collapsed Mountain Gate

Everyone in the mountains and villages around Ziyun Mountain knows that their good-for-nothing young master Li Pingfan has a beautiful daughter-in-law who has never married. All the good young men in the neighborhood were envious of him. This daughter-in-law was picked up by Li Pingfan when he saw her crying when she was a child. After picking her up, she turned from a little white rabbit into a big devil. This is a story about a time-traveling otaku who defeats the big devil and then protects the big devil~