One Piece: Path to Power - Chapter 15: [] Red Metal, Black Shadows

You are the ruler, I am a subject, you want loyalty, I’ll give you loyalty. You are the ruler, I am the subject, you want my sacrifice, I will sacrifice for you. This lifetime, we’ll only be ruler and subject…… cannot become the one who accompanies you to experience everything.

A deposed empress, a failure of a substitute. Charging into battle, he was the emperor, and she, his general. But within the intimacy of their military tent, he was her husband, and she, his wife.

But everything was star-crossed. For the one he loved the most, he would push her into hell again and again.

- Description from Novelupdates

The world is terrorized by the powerful Black Witch who has been sealed in the moon. Every ten years, the night of Hexennacht arrives and a chosen witch must battle the Black Witch in hopes of finally defeating her.

As the current decade’s Hexennacht approaches, a mysterious girl named Kagami Kagami arrives and meets Horinouchi Mitsuru, the daughter of the previous Hexennacht representative.

It takes place between Kyoukai Senjou no Horizon and the City Series, two other series by the author.

When she was rejected by her fiance, everyone laughed at her. Little did they know, she actually loved her fiance's uncle, a trillionaire tycoon, for a long time.Later, she had four doting brothers, numerous secret identities, and a husband who was madly doting on her.Fu Shiyan smirked, pulling her into his embrace, “Dear, when shall we have our third baby?”

It was a useless ability, right till the very end. That’s what Shion thought as he was dying. Among all the tr*sh, it was the tr*shiest that could only record.

Even when the Libra family was taking his life, his ability, ‘Notepad’, could only record.

But then, with his return, the amplification of the Notepad occurred. Not only recording and storing, but also recalling memories.

All the conditions were prepared.

“My future dream is to be a guardian knight of Libra.”

Now, Shion is about to record their downfall from the closest place to his enemies.