Don’t Pull Out Your Wand, Big Brother’s Just Anemic!

[First time writing] [Deluded misunderstandings] [Transmigration] [Yandere] [Tsundere] [Two female leads] [Another world] After transmigrating into the Demon King Chaos, Su Che plans to launch a grand “peace between humans and demons” initiative. But before he can even get started, a cannon blast from his own elders' council brands him a “mass murderer.” To stay alive, he has no choice but to split off a “holy son” secret identity and adopt the girl destined to become the chosen one. From then on, Su Che walks a tightrope: playing the holy son at the academy by day and wiping cold sweat in bed at night. Then one day, he realizes things are starting to go wrong Humanity's leaders: “Mr. Su Che's soul is utterly pure. He is humanity's last hope!” Demon general: “As expected of our king! He has even used the terrifying weapon of ‘gentleness’ to corrupt humanity's trump card from within!” Yandere younger sister: “Big brother, that catgirl's looking at you funny. Should I cut out her tongue, or lock you in your room first?” Pure-hearted saintess: “Big brother, it's time for us to begin an exercise called purging the murky demonic energy!” Su Che: [System, help! I can't keep up this act much longer!] Also known as <My Lord Demon King, Please Stop Using Your Looks to Get Your Way!>