You can recommend a system time-travel novel that tells the story of the protagonist's first love in the world. Pay special attention to the plot of the protagonist falling off the building together with Onotera Ritsuki and Takano Masamune.

Answer 1

I don't think it'll necessarily meet your needs, but I'll try my best to recommend a novel that's most relevant to your description: "Conan: My Wife, Yingli" is a manga novel written by the author, The King Who Strokes Dogs. The general plot of this novel is:

I've transmigrated to the world of Conan and met you at your prime. Fujiwara Chiba: Ever since the first time I saw Miles, I followed his heart. [PS: First Female Lead: Concubine Yingli]
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"The Capital City's Hidden Love Story" was a light novel written by the author, Umi Nozuki. It was a daily love story. The general plot of this novel was:

The land of that world was empty and desolate. Shotani Yoshiaki accidentally entered it and luckily escaped, but those inhuman beings always wanted to capture him. Wandering the world, being taken in by a female high school student, being targeted by a witch, being closely monitored by Qing Mei, whose actual age was in the four digits…He just wanted to stay away from that world that ordinary people could not see, a little further. However…["Resisting fate is also a part of fate."] Things always go against one's wishes. ["Zong Gu, come here and let me touch you."] ["Self-discipline is the way to correct oneself."] They were the ones who wanted to catch him.
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"Meeting Those People in Japanese Entertainment" was a light novel by the author Energy 01. The general plot of the novel was:

A transmigration, a rebirth, a dream. He had the chance to change the future of the members of his previous life. It was a journey, a journey of a lifetime. In this life, even if he had to give it his all, he had to send those people in his heart to the peak. He once strolled on the streets of Tokyo and was once loved by a goddess on the snow. He had once walked in the memory palace and schemed against the mysterious society. When he reached the peak, he looked back and said,"Fortunately, I met you!.. [New book: The Past of Japanese Entertainment has been released. Interested friends can go over and take a look.]
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The book "After Rebirth, Entangled by the Nation's Girlfriend" was a light novel written by the author whose head was not at home. It was a daily love novel. The general plot of this novel was:

A small car accident had not only allowed Lin Yashu to accidentally transmigrate to Tokyo in the parallel world, but it had also given her a national girlfriend at the start of the game? This book is also known as "The First Producer of Tokyo" and "The First Scholar of Japan".
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"Tokizaki Kozo in the Other World" was a light novel written by the author, Ritual. The general plot of this novel was:

As a typical otaku who stayed at home, Ye Luo took a nap and realized that he had transmigrated. It was fine if he transmigrated, but he actually became a girl. He couldn't bear it! It was fine if he had turned into a girl, but this girl was actually Crazy Three. It was really…inexplicably stifling! What made him complain even more was that there was actually a martial soul in this world! Alright, alright, let's do it this way! His new book, My Girlfriend Is Crazy Three. Please collect and recommend!
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"The Demon King's Reigning of Japan's Sengoku Period" was a historical novel written by the author Undear. The general plot of this novel was:

The necromancer traveled to the Warring States Period in Japan and saw Nobunaga, who had nothing to do with right and wrong, die in front of him. The necromancer wanted to return to the beginning of everything with curiosity, but an accident happened in magic, causing a change in time and space. When he woke up, a little girl named Kinoshita Fujikiro appeared in front of him.
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"My Miss Tokyo" was a light novel written by the author, a traveler. It was a love story. The general plot of this novel was:

His new book,"My Tokyo Girlfriend Is Really Strange," was being published! Somehow, he had transmigrated to Tokyo in a parallel world. As the Curly King, he wanted to lie flat, but a life choice machine suddenly popped up…[As the heart-warming protagonist, please go and warm up the cold Tokyo lady!] [1. Greet coldly (progress bar +1) 2. Greet with a smile (progress bar +1) 3. Don't greet (no reward)] Nohara Tsuru: Are you sure this is a choice and not coercion?
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"Journey to Clear Snow" was an ancient romance novel written by the author, Lord Star. The general plot of this novel was:

A few young and beautiful city youths had coincidentally transmigrated to the Sui Dynasty. He had been pushed to the peak of his life by fate. He stood at the top of humanity. They knew the outcome of history, but they never expected the process to be like this!
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"Tragic Time Travel: Ode to Concubine Lie" was an ancient romance novel written by the author Chi Ji. The general plot of this novel was:

[Pretty Girl Transmigration: My pretty male consort transmigrated and became a rich young lady, but her family was exterminated overnight. She was lucky to escape, but she was kidnapped and sold as a slave.] Unexpectedly, my master was the poor boy who kissed her two years ago and said he wanted to marry her. He even tortured me…An accident, and the princess gave me to the crown prince. From then on, life in the palace began. The devilish crown prince, the devilish third crown prince, the cold king, the elf princess, and the him who appeared at the beginning. Who would be my final savior?
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"Japanese Entertainment Strategy" was a novel written by the author, Wowo Wuhun. The general plot of the novel was:

A young man who was traveling in Japan experienced an almost supernatural accident and traveled to Japan in 1998. He started a new life under the identity of a Japanese teenager who happened to die. Around him, a future idol level actress and his strange and new life gathered into a splendid intersection. A new life, see how he galloped in the magnificent rose garden, and see how he guided Japan to change for the sake of his previous life.
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