Becoming a Cannon-Fodder Teacher at a Noble Academy

[Overpowered, scheming Demon King shou x wild, loyal-dog gong] 1 When Mo opens his eyes, he discovers that he has transmigrated. He's become a cannon-fodder teacher at a magic academy, a half-human, half-tree spirit with an appalling face and only one redeeming skill: a talent for potion-making. The magic book floating before him tells him this is a story about four noble F's who torment and bully a commoner special student, only to fall for him and try to force him into a relationship, eventually being won over by his kindness. F1: The eldest son of a berserker family, arrogant and brutish. F2: A genius of the spellcaster faction, gentle and clever, but a pervert. F3: The youngest of the royal elves, elegant and knowledgeable, but cold. F4: A descendant of an ancient demon dragon, adorable and lovable, but wicked. Magic Book: "Something has gone wrong. The F4 will indirectly cause the Savior special student's death, making the world end before its time. Please help them find their happy ending and save the world." Mo rests his chin on his hand and says lightly, "But I'm the Demon King." Magic Book: "..." Mo smiles. "Besides, I've just conquered six worlds, and I'm only halfway through the last one." The magic book frantically flips through its pages, then finally confirms: This guy really is the Demon King himself, who ruled six worlds and slew countless gods. Mo asks with keen interest, "Go on, tell me how to save the world." Magic Book: Silence is the only answer tonight. 2 A century later, Enlu Academy welcomes its second special student with no background or noble blood, admitted purely on merit. Before long, rumors spread that the four most untouchable figures in the whole school, indeed the whole continent, have taken him as their enemy. To teach this insolent commoner a lesson, they even find a way to join his special class. Everyone: He's definitely done for now. But as they wait, at the school-wide banquet they see F4 bring the potion teacher, with his face like a dead tree and his body draped in robes, before their families. One after another, they confess their love to the teacher. They even fight over the title of his partner. A special student has somehow joined in, too. Before anyone can process this, the teacher flicks a finger, and all five fighters freeze in midair. Mo calmly announces, "Teacher-student romances are forbidden. Fighting outside training hours is forbidden. Taking up a teacher's vacation time is forbidden. You've broken all three rules, so apologize to everyone in turn, then accept your punishment. Be good." That day, the F4, who had always done whatever they pleased, meekly apologized, bowing until their backs nearly snapped. 3 An unprecedentedly powerful teacher appears at Enlu Academy. He is a master of both the martial and scholarly arts, all-knowing and all-capable, without equal. All his students become peerless champions, concerned for the world and dedicated to protecting it. His low-ranking familiar breaks past its beast form, becoming an unmatched protector who follows him everywhere. Rumors also say that when he repelled the shadowy monster about to devour the world, someone saw his true face: Brilliantly radiant, as beautiful as a god, the perfect embodiment of unattainable perfection. At that moment, in the teacher's tower, his red-hot protector is buried against him, biting and licking him hungrily, as if feeding. But then the teacher cups his face, leaving him with no choice but to gaze at the Demon King, whose face is flushed and whose eyes are teasing and playful. The Demon King lightly taps his lips and says, "Didn't I teach you? You have to start with a kiss." [Reading Guide] 1. A universally adored shou, a chaotic-neutral troublemaker who enjoys himself and has no tragic past or deep reason for becoming the Demon King (he simply decided to do it and did). He is adored by everyone in reverse, meaning he's fiercely protective of his own people and dotes on all of them, especially his students. As for his appearance, the shou has seven different forms, and can even shape them himself at any time. His appearance doesn't change in the early chapters; later, he switches between them depending on his mood. 2. The gong is a beast in his true form. He's loyal, but still wild. He takes human form later mostly because of love (ahem). 3. Western fantasy world, magic system, many original settings. Any references will be clearly listed in detail. 2025.3.30 Theme: There is no single answer to love.