My Cold and Aloof Master Became a Bewitching Master

Blurb screenshotted on January 15, 2021

[Cool, expressionless top student who charms people effortlessly, a soft-hearted robot beauty of a shizun, bottom VS clingy, possessive, jealous yandere disciple who plays the pitiful one, top]

Pei Jiu Tang transmigrates into a harem novel as the cool shizun of the universally adored protagonist, He Yan'an.

He diligently plays the part of a distant shizun, paying little attention to his beloved disciple, drawing his sword to fight his sworn enemy, the Demon Lord, speaking little to his own shizun, and saying nothing at all to his senior brother.

System: That's great, Host! You've perfectly played a righteous, cool-headed shizun. Now let's figure out how to cuckold the beloved protagonist! Cuckolding is justice! Cuckolding is light! Only by cuckolding him can we fake our deaths and gain freedom!

Pei Jiu Tang: How do I cuckold him?

System: Do whatever you want! As long as you're happy, Host!

Pei Jiu Tang: Easy.

That very night, he found his sworn enemy, the Demon Lord, and asked, "Let's make a deal. I'll become the Demon Lord, and you become He Yan'an's shizun. How about it?"

The Demon Lord, one of the many people pursuing the beloved He Yan'an, agreed.

Pei Jiu Tang became a demonic fiend who committed every sort of evil.

The next day, the whole world learned that Pei Jiu Tang had gone mad. He'd gone from being the righteous, aloof paragon of the orthodox path to becoming a demon. He'd abandoned everything: his sect, his shizun, his senior brother, his disciple.

Later, everyone realized that Pei Jiu Tang had only abandoned one person: his disciple, He Yan'an.

Pei Jiu Tang was connected to everyone in the sect, and rumors about his ambiguous relationships with his former senior brother and shizun had been circulating for years. There was even a tragic, beautiful love story between him and the former Demon Lord.

One day, Pei Jiu Tang was going about his usual business, flirting with a perfectly expressionless face and dutifully creating rumors, when he ran into his former disciple, He Yan'an.

The moment He Yan'an saw him, his eyes reddened. He stood with both hands hanging awkwardly at his sides, helpless and lost.

"Shizun, have you abandoned me?"

Pei Jiu Tang said nothing, but his heart softened.

He allowed He Yan'an to come find him in the demon realm. He secretly helped He Yan'an improve his martial arts, and He Yan'an continued to admire and respect him.

"You don't need to come anymore. I have nothing left to teach you."

Over the past few years, Pei Jiu Tang had earned enough Cuckold Points to leave.

He Yan'an: "Shizun, once a teacher, always a teacher."

Pei Jiu Tang: "I'm not your shizun. Don't come back. The orthodox and demonic paths cannot coexist. From now on, if I see you, I'll kill you."

He Yan'an clenched his fists in secret.

The next day, just as Pei Jiu Tang was about to be taken away by the System, the world descended into chaos. The Demon King laid waste to the world and destroyed both the orthodox and demonic paths.

Amid the turmoil, Pei Jiu Tang passed out in battle. When he opened his eyes, he found himself in a sealed room. The Demon King, He Yan'an, smiled at him with red-rimmed eyes.

"Shizun, you're going to abandon me again."

Pei Jiu Tang discovered that the System had crashed. The world had collapsed, so it had gone off for repairs.

He couldn't leave.

Begging for mercy would be best now, but Pei Jiu Tang simply couldn't do that. Instead, he coolly retorted with five words:

"Did I ever want you?"

He Yan'an caressed Pei Jiu Tang's cool, aloof face.

"Shizun, then who do you want? Your disciple has marriage proposals here from the former Demon Lord, your grand-shizun, and your martial uncle. Shizun, which one will you choose?"

Pei Jiu Tang: "Let me out. I'll choose for myself."

He Yan'an: "Better not. Let your disciple choose for you. Shizun, shall we get married right now?"

Pei Jiu Tang gritted his teeth and enunciated each word: "How dare you."

Theme: Work hard at your studies.