Skeleton Knight, in Another World - Chapter 19Volume 5 -

Third Miss Luo relies on her father’s power to create chaos everywhere and is notorious for bullying the weak. When she had nothing to do, she led a group of servants to the streets to flirt with beautiful and handsome boys. For Princess Qingyang, if this kind of person dared to behave wildly in front of her, she would just kill her with a single finger—until she opened her eyes again and found that she became Third Miss Luo, Luo Sheng.

- Description from Novelupdates

This is the story of Kir, who has to thwart the will of Heaven, Hell, and his parents in order to survive, protect the people he loves, and achieve happiness.He just has to make it through life at a magical academy, avoid dying, and survive to find his birth mother, the lost Daughter of Heaven. Or be forced to take his place at the side of his father, a Duke of Hell bent on destroying the way things are.It's a lot to handle for a quiet, brooding angel boy.Fortunately, he has company. A succubus, a foxkin girl, and a half-angel boy to start. And Kir has his own secret: this isn't his first go at life.

Su Wan is a Realm Destroyer. She shuttles to different time-spaces using the identity of the “Cannon Fodder Ex-Girlfriend”, dedicated to plotting how to happily tear apart the male protagonist and the female protagonist.

There’s no such thing as protagonists who can’t be torn apart, only Ex-Girlfriends who don’t work hard enough~

I really want to become stronger!

Ding! Congratulations to the host for binding to the Myriad Realms Mission Upgrade System and starting the journey of becoming stronger.

What? You said S-level ninjutsu is rare.

Ding! Congratulations to the host for obtaining the Immortal Technique? Dayama Rasengan.

What? You say the admiral is very strong? Ding! Congratulations to the host for defeating Admiral Akainu. The Clear Sky Hammer is the strongest martial spirit! What, that thing can still kill people? I have Emperor Yan that can burn the sky! What, that thing can still burn people to death? System, I want to be the big boss. Ding, congratulations to the host for becoming the Digital Emperor. System, I want a Zanpakutō. Ding! Congratulations to the host for obtaining the most powerful Ice Emperor Pill. “How do you practice? How do you practice so fast.” “Sorry, I am a genius.” My name is Xia Muyang, a person who thinks about wandering every day. I am not in the world, but there is a legend about me in the world.

Main characters: Natsume Yo, Wada Chiba,

- Description from novelbuddy