Magika no Kenshi to Shoukan Maou - Volume 11 Chapter 4 — Mythology Abasement

One will to create oceans. One will to summon the mulberry fields.

Ashlock awoke in the courtyard of a demonic sect… as a tree.

A tree that eats people.

And one that grows stronger over time due to a daily sign-in system and cultivation.

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

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.

There are many people who try to act cool in front of him, whatever soldier king, assassin, system user, transmigrator, reincarnator, the strong returning, the strong coming down from the mountain, person coming back from the immortal world, reincarnation of the devil king, immortal emperor possessing someone’s body, and so on, all of them do not know what will happen next

- Description from Novelupdates