From the Manga, All My Disciples Are Villains

Traveling to the world of Gensokyo, Xia Mouce, who married Kazami Yuuka at the beginning, received the villain mentor system. As long as he taught qualified villains, he would be rewarded, so the style of Bankai became distorted. The Fourth Ninja War; Uchiha Madara and Hyuga Hinata fought against the ninja coalition of the four major nations, shouting the slogan "Do you also want to dance?" On top of the war; Katakuri, the son of the Four Emperors, came to Marinefando to fight against the navy and the Whitebeard and Blackbeard Pirates with his own strength. Death; Battle of Hueco Mundo, Nelu + Harribel repel Aizen and maintain Hueco Mundo's dignity. The fourth battle of the Moon; the oldest queen, Gilgamesh Shining, and his junior sister Arturia, the black gunner, seize the Holy Grail. Marvel's ultimate battle; Thanos and Hela, the goddess of death, defeat the Avengers together. Blood Devouring Attack, One Punch Man, Tutor, God Killer... Many years later, when Xia Mouce's disciples broke through the world barrier and came to him, the world was shocked. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.