Cyberpunk: Ultimate Cyborg System - Chapter 156: Chaos.

The story of otaku building a harem! School flower, loli, wife, mother and daughter, mature woman, teacher, nurse, queen, all kinds of beauties, three steps to push a girl, five steps to a group, harem group, infinite warmth, so cool that you always need to prepare a tissue for easy reading !

- Description from novelbuddy

Nan Xun encountered a mythical beast that could take her to different worlds. She helped the mythical beast collect merit points. After collecting enough, she can go back and change the outcome of her death.

But now, now she regrets, regrets till her insides are turning green. Your mother, those merit points are collected from the scum villain with a blackening value of 100 and an evil value of 100 ah! She only wanted to purify the souls of those scummy bosses. Fu** she didn’t want them to fall in love with her ah ah ah!

Pervert number 1 eats people! Pervert number 2 is an evil ghost! Pervert number 3….

After Nan Xun realized they were all the same person, she closed her eyes and pretended to be dead.

The evil, charming, crazy Boss-sama gave her an evil smile: “Baby, weren’t you going to purify my soul? Come here.”

Nan Xun: “The evil we bring on ourselves are the hardest to bear, I really want to die, ah, what to do!”

- Description from Novelupdates

Some say reincarnation is a blessing, but for me, it's a dreadful curse. Cursed with endless reincarnation, I've been reborn as a villain 137 times. And all 137 times, I've been toyed with and killed by heroes who are far more cruel than the said villains... If I can't win no matter what I do, then I'll crush those so-called heroes at their very roots. - Quality Fan Translations, Made by Fans for the Fans - Villain Takes Over The Academy