Villain's Harem Returns - Chapter 12: The Malevolent Blood

A striking man of mysterious origin and peerless talent, he looks back at the world, in all its entirety, with utter disdain. And yet, in the treacherous and unpredictable ultimate formation of the Boundless Secular World, he guards a breathtaking ancient qin with broken strings, waiting silently for the destined one to arrive!

A boy encounters him, and knows for the first time that the world beneath the Heavens is a fickle place. Not even demons, devils, ghosts and monsters can match the frivolity of human nature!

A slender physique, and jade-like beauty, but the sword that strikes between heaven and earth is not unlike a streaming rainbow!

The vastness of the starry sky, the seven emotions and six desires! Greed, anger and ignorance! The teachings of Buddha will grant you boundless strength!

A sea of blood will come, at the cost of all mortal beings full of honest hope!

The ghosts wail as the gods roar, but the sea of blood has no end!

Where, pray tell, is the path I should take?

Since there is no path, no matter how bitter and bloody the sea, even if my boat is made out of bones, I will soar to the heavens above!

- Description from Novelupdates

[Dazzling Beauty × Aloof Tycoon] [His Deliberate Plan]That night, abandoned by the man she had loved for ten years, she was deeply saddened and sought solace in alcohol, but accidentally drank the drugged liquor. Then, he appeared. With a lazy posture and a relaxed tone, he asked, “How about being with me?” He was a big shot feared by all and stood atop the pyramid of society. She knew he was a handful, yet she was still somewhat captivated by him. Thus, she agreed, “Fine.”From then on, it became widely known that he had taken a woman under his wing, doting on her excessively and granting her every wish. Some were jealous and said, “How long can he spoil her? They're just acting and will break up soon.” In fact, she thought the same, so she never dared to fall in love and awaited the day when she would be cast aside. Later, when rumors of a new companion in his life reached her ears, she prepared to leave, but he refused, saying, “You are the only one I have loved all along.”Little did she know, he had loved her for ten years...

An F-Class Hunter.

And on top of that, a F-class older brother who can’t even begin to catch up to the heels of his amazing S-class little brother.

After living a life that fell to pieces and even destroying my little brother’s life,I got another chance by regressing 5 years back. I picked up the resolution:
This time, instead of making those mistakes, I will quietly live my life leisurely .

Is what I thought… but the S-Ranks are all kind of… weird and for some reason I can’t seem to be able to get away at all?

This is a world where science and magic coexist.

Some people here seek powerful magic, and some seek eternal truth.

A science tyrant who came from another world, started as a little librarian, with magic in his left hand and truth in his right, kicking the door of the new century with one kick.

Some people call him the forerunner of magic, some say he is the founder of science.

Some people describe him that way.

In the new century, Blair is a symbol of evil.

- Description from novelbuddy