Himitsu – Kuro no Chikai - Prologue

In his past lifetime, he was an exceptional prodigy who practiced both medicine and martial arts. In this lifetime, on earth, he used his superb medical expertise and extreme martial arts achievements from his past lifetime to excel in the medical field and the ancient martial arts world. He moved his way towards the pinnacle!

Shen Li originally thought that traveling to ancient times would be the biggest challenge in her life, but when she saw the marriage decree in front of her, her eyes turned dark, marrying that crazy critic Si Yan? Let’s destroy together!

Rumors of the gift of marriage spread like wildfire, and many people took pleasure in other people’s misfortune. Who didn’t know that the cold-faced general hated the delicate lady the most.

However…

At the palace banquet not long after, everyone saw Si Yan push his young wife into a corner, pampered her head, and coaxed her in a low voice.

“Look at how fast you ran just now, isn’t your leg hurting?”

Shen Li slapped his hand off with red ears and gave him a look.

“I’m ashamed to say, can you be normal, didn’t you see how strange those people looked at me just now?”

After opening her mouth, Shen Li realized that she was more like acting like a baby, and immediately put on a stern face.

“It doesn’t matter, you go to the study to sleep at night.”

After being taught a lesson, Si Yan smiled instead of anger.

“Okay, the bed in the study can just sleep two people.”

Shen Li frowned:?

Seeing her expression, Si Yan gave a “tsk” sound: “Want me to hug you to sleep? It’s really troublesome, but it’s not impossible.”

Everyone: Am I blind or deaf? Is this the decisive and unsmiling Si Yan?

This is probably a story of a wild wolf becoming a loyal dog.

- Description from novelbuddy

Ren Takahashi, a shy, hoodie-wearing tech genius, hides behind the online alias GhostHood — a quiet legend in underground hackathons. Despite appearing average in school, he dreams of becoming a real-life Iron Man — not the hero, but the builder of world-changing tech.Enter Aoi Hoshizaki, a bold, gal-style girl with a love for code, a messy room, and a mysterious spark. When she moves in next door and discovers Ren's secret, their world begins to change — from quiet club meetings to national hackathons, late-night debugging sessions to secret rooftop conversations.What starts as teamwork grows into something deeper, more complicated, and far more electric than either expected. Together, they aim for Japan’s most elite tech university — and face rivalries, rumors, and the whisper of love in every line of code.

I was born into a prestigious martial family, yet I was nothing but a useless person with no talent whatsoever.At least, that was the case until I was trapped in a dream.[You cannot die here.][You can not lose your mind here.][Time does not move in this place.][You cannot leave until you reach the extreme.]Geniuses and fools—people say these are two unchangeable truths of the world.They claimed that I could never enter certain realms because I was a complete fool.But when a human body and soul are thrown into the extremes of time, they adapt.[Congratulations. You have reached the extreme.]Now, it is time to leave.