The Main Characters That Only I Know - Chapter 10:

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

Xia Wan entered an ancient Mary Sue campus novel and became a cannon fodder female supporting role who had a marriage contract with the male protagonist F1.
F1 thinks she gets in the way because he likes the heroine.
Because F2 has a crush on the heroine, he thinks she is superfluous.
F3 finds her troublesome because she needs a female lead.
F4…I’m still working as an exchange student abroad, so I won’t be able to play for a while.
In order to avoid becoming a suspect in the future.
On the first day of transferring to this school, Xia Wan stood on the podium and introduced herself, “Hello everyone, I’m Xia Wan’s younger brother!”
*
The system told Xia Wan that there are two ways to live, to gain love or friendship from F4.
Xia Wan chose the latter without hesitation.
On the first day of disguising as a man, Xia Wan gave water to the grumpy F1, and a rainbow fart output touted his skills as a dog.
On the tenth day of disguising as a man, Xia Wan helped the gentle school god F2 avoid his crazy suitors.
Fifteen days when she disguised herself as a man, Xia Wan gave the dandy F3 sincere care and help.
…
When F4 returned to China, he found that the position that should have belonged to him had been replaced by someone.
And his three close brothers fought over who was Xia Wan’s best friend.
F4: ? ? ?
#Our F4 seems to be over#
Xia Wan:OAO
#What do you see me doing? I don’t know anything! #
Thanks for the cover @salt lemon.

【Reading Guide】
No CP in the text, single arrow for all staff, friendship to a happy ending
Fanwai 1v1 has a male protagonist.
For details, see the words in Chapter 1, which can be accepted and read again.

Content tags: Wearing books Women disguised as men
Search keywords: Protagonist: Xia Wan ┃ Supporting role: Who do you love ┃ Others:

- Description from novelbuddy

[Quan You Fan: You can read without barriers even if you haven’t read the original book or TV series]

after many years,

When the legendary lord, the dragon knight, the son of the holy flame, the nightmare of the schemer, the smasher of the order of the game, the undefeated myth on the battlefield, the ruler of the seven kingdoms and the guardian of the whole territory——

When Samwell Caesar sat on the Iron Throne,

He must have thought of that distant afternoon when he got the pioneering order from the Rose of Highgarden.

At that time, no one could have imagined that this young man abandoned by his father would set off an iron-blooded storm that would sweep across the entire continent of Westeros.

Du Xiao Li, the legendary person all look up to, yet couldn’t ward off the ridiculousness of fate!

Opening her eyes once again, the steady and calm her was still shocked senseless by her own withered little hands, and the leaking and windy rat infested surroundings before her eyes.

Both parents dead, three meals uncertain, and her only property was this shabby house and a cute little big brother.

What the hell is all this!

Buying a mountain top, planting fruit trees, opening winery, fermenting fruit wine, and developing a supply chain. From then on, profits poured in from all sides, bringing along big brother to lay down a family fortune and become rich!

Making close friends, kidnapping a prince, fighting villains, a peasant daughter can also live calling the wind and rain, laughing in face of the world!

Oh? This little guy looks pretty good, come plant a fruit tree for me then! How about also set a kiddy engagement?

With the roll of his eyes, the small child, who was currently being enslaved to plant trees gave her a cool turn of his back.

One separation, several years later, seeing this tall, rich, and handsome emotionless prince tell her with an ice cold face that she and him were already engaged, and moreover have long sealed the deal with a kiss, letting her take responsibility. He really was that little handsome boy from before?!

Du Xiao Li speechlessly look to the sky: I don’t want to be a princess consort! Can I get a refund?!!

The cold face prince, with a face full of grievance: You said before that once sold, can’t be returned. A few years ago, I’ve already obediently gave myself to you. In these years I’ve always carefully obeyed your teachings, keeping myself pure for you. How can you heartlessly abandon me now?

Du Xiao Li’s jaw was about to drop to the ground: Alright then, seeing that you’re this obedient, you can come home with me!

A certain young master charmingly smiled: This husband shall comply!

- Description from Novelupdates