I Used and Abandoned the Demon King

In his previous life, Fujiwara Yuki was a shameless scumbag who juggled countless relationships, cheated, and never regretted a thing. His accomplishments included

1. Tormenting the girl idol group known as the "Generation of Miracles" in middle school;

2. Cheating on girlfriends from Kanagawa to Tokyo in high school, and going after every seeded player in the national girls' tennis tournament;

3. Joining an international seafood company in Italy after graduation, and breaking up the close-knit maternal family of the Vongola in less than a year.

In the end, he got the classic bloody-chainsaw ending.

When he opened his eyes, he was in hell. The newly appointed feminist King of Hell placed a curse on him

He had to live through forty-nine cycles of being abused, both physically and emotionally, by scumbag men as a woman, then cruelly dumped after being seduced. Only then could he be reincarnated and start over as a decent person. Until then, he could only live as a woman possessed by the God of Poverty, with a monthly allowance of just 9,999 yen.

To break the curse, Fujiwara Yuki became Fujiwara Yuna, returned to the human world, and went looking for "scumbag men."

But something went wrong at the very first stop. Somehow, the grim reaper sent him to the demon realm. Seeing the blue-haired kid surrounded by a crowd of girls, Fujiwara Yuki (now Yuna) assumed he was a kindred spirit and couldn't help advising him:

"Bro, take it easy. Women aren't to be trifled with. They'll call you sweetheart today and stab you tomorrow. You'd be better off seeing through the vanity of the world and cultivating your character!"

The newly crowned Demon King replied:

"Thanks, but... you're a girl too, aren't you?"

(And kind of cute, too...)

A wild womanizer-turned-woman who loves playing the field x a seemingly flirtatious but actually pure-hearted Demon King

Bonus Scene

Fujiwara Yuki (now Yuna) had her own special way of spotting scumbags. After spending some time in the demon realm, she judged others by her own standards and decided the blue-haired kid was definitely a scumbag who pretended to be a warmhearted nice guy while building a harem. So... all right, you're first!

She easily took down the inexperienced virgin, then waited to be dumped. But months went by, and not only had he failed to dump her, he was planning to make her his queen! Yuna panicked and promptly snuck into the human world to look for her next target...

The Demon King, who'd been seduced and abandoned: ???

Theme: Turn over a new leaf and become a better person