[Based primarily on the Harry Potter movies, with some FGO elements added] [The author received guidance from Rowling; this is not random writing or based on assumptions, so please read with confidence!]

[The main character will not become the Saber King; there will only be a few chapters where he/she becomes a girl for fun. I couldn't think of a better name at the time, so I just used this one. The name will be changed after the book reaches 200,000 words. If you mind this, please don't read on. I'm very sorry!]

When Lynn was reborn into 20th-century London, he thought he was living the life of a protagonist in a rebirth novel.

But tell me, what the hell is magic in this world?!

As Lynn gradually accepts everything and prepares to enroll at Hogwarts to learn magic and fight Voldemort.

Tell me what the hell a magic circuit is!

Fate is here, right?! Does that mean we'll have a Holy Grail War next?

Screw the Type-Moon universe, I'm quitting, I'm giving up!

[Original male protagonist × Theodore (Gryphon x Slytherin) + Thrilling story + Happy Ending]

Vincent's first dream was to become an inventor as great as Einstein, but Dumbledore rejected him and threw Grindelwald at him.

Vincent's second dream was to become a great white wizard like Dumbledore, but Voldemort rejected him and threw a diary at him.

Vicente's third wish is to perish together with this heartbreaking world!

Theodore Nott rejected him and told him to go sleep in the study tonight!

Vicente: Ծ‸Ծ

On Harry Potter's first day at school, Dumbledore was on high alert until he saw Vincent Riddle!

After Dumbledore had observed for several years and had just breathed a sigh of relief, Severus suddenly appeared menacing...

Multiple female leads, crossover anime, no eunuch ending, protagonists lacking any true goodness or beauty.

While traveling through various anime worlds, Tetsuya Amano unexpectedly discovers that all the female protagonists have a treasure chest with a progress of 0% above their heads, which triggers his obsessive-compulsive disorder!

The key to open the box was actually on the male protagonist.

To control them and their lives.

Tearing apart Aki Tomoya's dignity and publicly humiliating Hikigaya Hachiman.

When Aki Tomoya knelt at his feet, when he treated the Service Club like a playground...

Asuka Tama traveled through time.

But why is it a baby? You wretched goddess! (Asuka Tamaki)

(waving her little hands in a frantic manner)

Yu-kun, let's go to my house to draw together. (Eri-ri)

Lord Yu, can we... play music together? (Little Lonely)

Tama, don't you welcome me back? (Yukino Yukinoshita)

It's actually a Shura field!

Returning from the mysterious world, witch Harry only wants a peaceful life and to experience Hogwarts, this fairytale playground, firsthand. However, a certain self-proclaimed Dark Lord and some so-called "important figures" seem determined to prevent her from having her way. So, it's time to let the wizarding world know what true "calamity" really is. (Those who haven't read Harry Potter or Lord of Mysteries won't be affected.)

Lin Feng, a typical office worker, wakes up to find himself a "low-achieving student" at a magic high school? His theoretical knowledge is terrible, and his practical skills are lacking.

However, he unexpectedly awakened the Eye of [Analysis and Reconstruction of All Laws]—all magic in the world appears as transparent code to him! Optimize CAD? See through flaws? Analyze the essence?

Lin Feng's journey begins with a clash with the rampaging "Ice Queen" Miyuki Shiba! Faced with the raging magic that even the "Demon King" Tatsuya had to carefully suppress, Lin Feng inexplicably reached out a finger and gently touched it... and the raging magic instantly became as docile as a lamb?!

Miyuki was stunned: How could this underachiever give her a sense of security that rivaled that of her brother? Tatsuya was on guard: Was this man a threat or a savior?

Witness how Lin Feng, seemingly an "underachiever," outwits a formidable foe and becomes a legend in the Nine Schools Tournament! He strikes at the heart of Shen Xue's shackles.

She is favored by student council member Mayumi Nanakusa, challenged by the tsundere Erika Chiba, and admired by the gentle junior Honoka Mitsui.

During the Yokohama Incident, he protected the women, nullifying missiles with his Eye of Law! On the international stage, he deciphered the secret techniques of various countries, gaining worldwide fame! On the night of the four-leaf clover, he faced the Queen of the Night, reconstructing a secret technique that shocked the entire audience!

As the world is in turmoil and the ultimate crisis arrives, Lin Feng will use the "laws" as his sword to protect his loved ones and rebuild order!

His legendary comeback story begins here! Experience thrilling battles, strategic clashes, sweet romance, and heartwarming everyday moments.

Tokyo. Inside an apartment. A handsome young man stood silently before the bathroom mirror. Not long ago, inexplicable memories flooded back. Now, he had completely absorbed them, realizing he was no longer in the same world. There were no more dump trucks, no more divine favor.

As the multiverse reaches a new turning point and a new era is about to begin, in this unprecedentedly turbulent age, a transmigrator, relying on an analysis system, ventures into a strange wizarding world, seeking power and rules amidst endless knowledge and pursuing the truth of the world.

This place is the site of a magnificent interdimensional war.

There is strange and bizarre witchcraft here.

Here lies the eternal and everlasting glory of the gods.

...

(Level setting:)

Apprentice level: Elementary Apprentice, Intermediate Apprentice, Advanced Apprentice, Quasi-Witch.

Formal level: 1-9, with 1 being the lowest and 9 being the highest. (In the text, "Grand Wizard" or "Ancient Wizard" generally refers to wizards of 5th rank and above.)

She was transported to a parallel world and became a woman! With the face of a loli and the figure of a mature woman, she was the undisputed school beauty at school; in the game, she was an even more lovable and hateful domineering empress!