[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!

[A random female protagonist + a changing doll + a loser female protagonist + my little sister + ...]

The moment I close my eyes and open them again, a non-existent memory suddenly appears in my mind.

Rebirth or reincarnation?

Kazama Tetsuya doesn't want to think about those things right now. After his parents' divorce, he became self-destructive and had no source of income.

And those works that popped into my memory are completely absent in this world!

Kazama Tetsuya went completely mad, determined to use the works from his memories to make money and support his family, resulting in: "Saekano: How to Raise a Boring Girlfriend", "My Youth Romantic Comedy Is Wrong As Expected"...

As a result, just three days after submitting the first volume of the light novel, there was a sudden knock on the door of Tetsuya Kazama's house.

Are editors these days so dedicated? They're actually going door-to-door to sign contracts?

...