Great Doctor Ling Ran - Chapter 19 - Technique

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

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 leader of the alliance, Song Zhaolan brought a group of martial artists to besiege the demonic sect. Suddenly the whole alliance and the demonic sect had crossed over to be the students of Class A and Class F.

So this group of people climbed the wall and went to the Internet cafe, stayed up late to read novels, and participated in the sports meeting with 18 kinds of martial arts…

The students at Wulin No. 1 Middle school were going crazy. Every day, they trembled under the authority of these two big bosses. They were caught in the middle of these two classes that were sanctioned with iron fists. There were no longer mandarin ducks in the grove, only the two bosses shouting at each other.

Finally one day, Song Zhaolan received the demon’s “letter of surrender”:

“Who says that good and evil do not mix? I insist to exist in your heart!”

Class A student: The alliance leader is mighty, he actually captured the right palm of the devil with one hand!

Class F student: The leader has a good heart, he actually used his mouth to save this scumbag!

BCDE student: Are you blind or mentally disabled? ? ?

The martial arts master who only wants to cook shou X The master who only wants to learn gong

- Description from Novelupdates