Mushoku Tensei - Volume 24 Santa Claus Newcomer

The first great emperor in the world was betrayed by his confidante and perished. Millions of years later, the great emperor’s soul returned and was reborn as Ye Yan, the son-in-law who was kicked out by the Chu family with a letter of divorce, restarting the supreme journey. Open the gate of immortality, kill the Jiuzhongtian, and cast an invincible name again!

- Description from novelbuddy

Mu Yu, who had just started university, unintentionally downloaded a mysterious hand tour and was brought to a strange and bizarre world, becoming the first player of the ‘Mystical World’.

By chance, Mu Yu joined an ancient sect that had declined for a thousand years. He successfully repaired the sect’s supreme technique, the Secret Manual of Space and Time, and became its spacetime descendant.

After three months, players officially logged into the Mystical World game. Mu Yu was already the pride of South Sky.

Two years later, when the players had grown up, Mu Yu had already become the most dazzling Saint under the starry sky.

….

At the foot of the Misty Cloud Mountain, a young girl in a white dress nestled in Mu Yu’s embrace as she cried, “I, Nalan Yanran, would rather die than marry that young master of the Xiao family. I only wish to marry you in this life.”

“Ding!” You have successfully triggered a 3-star mission! to help Nalan Yanran go to the Xiao family to end the engagement! ”

“Wait a minute, this script isn’t right. Can’t we just not do it?” Mu Yu felt like crying.

“Either way! Either die! ” The System pulled out a 10m long broadsword.

“Stop, can’t I do it…” Mu Yu submitted.

- Description from Novelupdates

In a normal and average modern world where a prestigious academy nurtures elites in a certain field who are known as ”Supreme“ such as [Supreme Inventor], Allen Walker suffers from being called 'average'. Allen Walker can't accept why he has to be average when a few are fortunate to be born as either a genius or prodigy. After a week of self-loathing, when all of his hope was lost, a sound snap him back to reality, or is it insanity?

Ding!

[A suitable host has been found! Prodigy System at your service!]

Ding!

[Hello darling! Chuu~ Harem Protagonist System at your service! Or do you want my service in bed instead?]

Ding!

[A wild Anti-loner System has appeared!]

Ding!

[Fiction fanatic, praise thee and thou shalt be graced with the Multiverse Traveler System!]

Ding!

...

Before Allen can even choose a system, another too familiar sound harassed his ears.

Ding!

[For achieving a thousand system requests which are a one in a decillion chance to occur, a Supreme Being was forced to use Divine Intervention.]

[Merging all of the thousand systems to create the most versatile and advanced system... Merging complete! Alternate Multiverse Chat Group System has been obtained!]

After accepting the Alternate Multiverse Chat Group System, Allen becomes a prodigy and the Chat Group's Admin and has no choice but to chat with beings from other universes.

Beings with suspicious, delusional, and eccentric names such as [I Love Mathematics], [Lolicon Shota Cultivator With Soul Fetish], [Sword Forge From Chaos], [Self-Proclaimed Genius Goblin Hero], [Reality's Bitch], [Time Manipulator Of The Apocalypse], and [Delusional Modern World Chuunibyou]

The chat group introduces Allen as [Supreme Order] as he chats with the otherworldly beings to find out the secret behind the Alternate Multiverse Chat Group.

The dimensional rifts link the earth to the Xingwu continent. This is the dawn of the martial arts era!

I will be useless if I don’t practice martial arts? Don’t worry, I have a system that allows me to pick up attributes. When other people drop attributes during their training, I can pick them up secretly.

Huh? Did you just say that beating up people will make them drop attributes too? In that case…

You defeated a sword skill genius. He dropped Enlightenment×2, Sword Talent×1… You’ve picked them up. Your insights have improved and you’ve gained a beginner stage sword talent!

You defeated a blade skill talent. He dropped Blade Battle Technique×1, Malicious Blade Intent×1… You picked them up and learned a rare blade battle technique! You’ve also figured out Malicious Blade Intent and have become extremely fierce!

You defeated a physique talent. He dropped Physique Scripture×1, Holy-Blood Dominant Physique×1…

You picked them up and learned a new top-grade scripture! You are exceptionally lucky to have received the Holy-Blood Dominant Physique. It can change your physique completely and you earned a god-level title 'Endless Health'.

Someone killed a powerful star beast and dropped Spiritual Sight×1 and Blank Attribute×60… You picked them up secretly and receive a spiritual eye talent as well as 60 points to add to any of your current attributes!

You defeat many opponents in your life. You accidentally kill an innocent devil and split the universe into two when you’re practicing your blade at home. You burst the sun with your fist and the world is engulfed in darkness…

That’s when you realize… You’re invincible!