DxD: System of the Harem King - Chapter 216: The Threat

The doomsday fell upon the earth when a dragon coffin sealed under a snow mountain for ages shifted, and the civilization of gods and devils began. The whole universe turned into a fantastic new world where everyone could rise to the top through cultivation. A lucky young boy seized the opportunity, and started his journey to be an overlord in cultivation.

- Description from Novelupdates

Thirty-six [sequences] rule the world, and the creatures who hold the [sequences] can move mountains, cut rivers, cover the sun with one eye, and enter dreams for thousands of years.

There are heroic wine immortals who master the [Wine Sequence] and walk freely, there are court princes who understand the [Law Sequence] to formulate laws, there are [Tao Sequence] Taoist priests in the mountains, there are [Gu Sequence] wild Gu masters, there are [Gu Sequence] Love Sequence] the stunner and beauty.

Waking up from a dream, for Chen Yuyan, the rivers and lakes are no longer the rivers and lakes in the game “Strange Rivers and Lakes”, but the real world that is vividly presented before him.

In order to survive, in order to get rid of the gaze of the “fairy god”, Chen Yuyan had to step into the rivers and lakes, facing conspiracy, swords, swords and shadows, and ulterior motives.

- Description from novelbuddy

He is an undead who is devoid of all humanity, he is the one and only supreme overlord, he is a man who has severe mysophobia.

An ordinary young man reincarnates as Adrian, the eldest son of a once-prominent noble family now living out in boonies of the kingdom. Watch as Adrian embarks on a tantalizing journey, to support his graceful and caring mother and feisty older sister, as a man should, with his seduction system.