Strongest Survival by Otome Game’s Heroine (LN) - Vol 1 Chapter 20: Hobgoblin Fight

In an inaccessible village, there were a few houses on the hillside.

People from far away were attracted here and the mountain road was crowded with luxury cars, because, in this town, there was a young man with incredible medical skills who could cure all kinds of illnesses!

- Description from Novelupdates

Though he received the skills necessary to teleport across worlds, the king who performed the summoning ritual attempted to trick him into wearing a slavery collar, this annoyed him so he kidnapped the princess and returned to Earth.

A strange event happened in Blue Star, a large number of Blue Star people were affected by a mysterious force, and their souls temporarily traveled to another world.

It’s a dark, weird world

Not only are the prices extremely high, but there are also many evil spirits quietly appearing. At the same time, various forces are fighting with each other, and the people of the lower classes are suffering.

Yang Fangben, the attending physician of the mental hospital, also traveled through a strange incident.

Fortunately, he found that he had awakened a proficiency panel.

As long as you keep refreshing your proficiency, you can improve your own realm.

He grew up secretly, with corpses piled up under his feet, and he unknowingly embarked on a path of sagehood.

- Description from novelbuddy