Mowang Xiang Gen Wo Jiao Pengyou

A young man with a strong belief in science and a reserved nature was expelled from his sorcerer family due to his lack of magical abilities. He formed a close bond with his younger sister after being rejected. When she disappears, he hears about the Demon King's activities and suspects he is responsible. To rescue her, the man disguises himself and enters the Demon King's territory. There, he discovers the ruler is unexpectedly a good-looking man with an interest in fashion.