MOBA: Mistaking the Empress for My Big Sister

Chen Xin transmigrates and, from the start, heads to Chang'an to seek refuge with his older sister. By a strange twist of fate, he runs into Empress Wu Zetian, who is reminiscing about the past, and mistakes her for his sister. Chen Xin: “This is Wu... I mean, my skill book, Empress's Majesty. Here, Sister, keep it for protection.” Wu Zetian: “...” Chen Xin: “Sister, the demon beasts are about to awaken, and the world is on the brink of chaos. I'll train hard and protect you for the rest of my life.” Wu Zetian: “...” Chen Xin: “Sister, I don't just write poetry, I know a little music, too.” Wu Zetian: “...” Chen Xin: “Sister, the current empress is incompetent, and the world has descended into chaos. Now that I've mastered my divine arts, why don't you become an empress too, just for fun?” Wu Zetian: “????????” The empress had inexplicably gained a younger brother, and she was completely baffled. This younger brother was strange. He was always producing odd things and saying peculiar things, and every time, they came true. The author isn't great at writing introductions, so please head to the main story.