Re:Zero Kara Hajimeru Isekai Seikatsu - Chapter 11Arc 8, - “Shut the Hell Up”

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Xiang Shaoyun is the young master of an influential and powerful sect and is blessed with an extreme latent talent in martial cultivation. From talent comes confidence, and from confidence comes a declaration to give all the so-called geniuses a head start of ten years before catching up to them.

Upon being reborn, she immediately offends a vicious two-faced bigwig.

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