Toaru Majutsu no Index SS - Volume 2, Chapter 14: The Dance between Gatekeeper and Intruder. The Third Friday of September.

He holds a god-level sign-in system in his hand, punches the goose factory, and steps on the pig factory. Do you think there is no good game?
First feed you two mouthfuls of tainted milk powder, and then send you the legend of the dragon and the Hearthstone gold cartoon for free.
What? Still not satisfied? League of Kings out-of-print skin, give away!
Satisfied? Tch, this is just the beginning…

- Description from novelbuddy

Will, a seasoned game designer, found himself reincarnated as the disposable villain in a cliché “kicked out of the party” novel. Faced with his inevitable tragic fate, he had one ambitious dream: to turn the pitiful “losers” from the protagonist’s harem into terrifying blackened bosses who would torment the protagonist!He taught the timid and cowardly wolf-girl maid to imprison the one she loves forever by her side.He trained the tsundere, sharp-tongued loli witch to make her beloved see only her in his eyes.He guided the cold and clueless half-elf princess to use…—

He, who leads human evolution to become Light.

An ordinary young man of the earth accidentally gets a testing VR helmet…

The world changed ever since…

BarelyTranslation : 1-25 chapters of mine aren’t linked here, but it is available at my site.

As a Beta, Ning An’s goal in life was to work hard, make money and get rich. However, his own dear father changed his aspiration and made him become a military academy student. Initially, he wanted to spend his days lazing about. What? The first place in the year gets a generous scholarship? Then staying up to study and train my body is nothing at all! The first place scholarship is definitely mine!

The A in the opposite dorm: So you’re actually an O.

Ning An: Ah?

The A in the opposite dorm: I know. You’re risking it all to prove that an O is not inferior to an A.

Ning An: You know my ass. Laozi is a B.

The A in the opposite dorm: You need to correctly recognise your own gender ah.

Ning An: …. Teacher. Report. I’m afraid this person is stupid.

note: Pretending to be a B’ is 装B (Zhuang B). 装B also means to boast or show off

- Description from Novelupdates