Super Invincible Upgrade - Chapter 249 -

As Shin Youngwoo has had an unfortunate life and is now stuck carrying bricks on construction sites. He even had to do labor in the VR game, Satisfy!

His Royal Highness the King of Han, who was afraid of the dark and ghosts and loved to cry, has always been the good baby of the princess.
Until one day, His Royal Highness the King of Han found a book in the bookstore…
Picture book?
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Search keyword: Protagonist: King of Han, Princess of Han

- Description from novelbuddy

Leric was a top herbalist and a qualified doctor, but he was already in his twilight years. He had spent his entire life researching herbs and the human body. And because of this reason, he didn’t experience the joys of life. However, a piece of information written in an old book changed his life.

It was a chance at rebirth!

With his knowledge as an herbalist and as a doctor, join Leric as he begins a new life in Falkur, a world ruled by powerhouses called Espers!

Leon’s life was one of hardship: orphaned young, drafted into the army at 16-17, and shattered by gambling after returning to civilian life.When all seemed lost, his fate shifted.[SSS-Rank Kingdom-Building System Activated][Status: Basic Functions Active][Potential Unlocked: 0%]Initially, the system provided only minor aid in a medieval world dominated by strength and cunning. But Leon’s ambition fueled its evolution.Armed with military experience, a sharp mind, and a system bridging worlds, Leon sets out to dismantle the existing empire and forge his own, rising from a wanderer to a kingdom builder who reshapes the world.---Tags: Harem / R18 / World Building / Kingdom Building / System / Modern Knowledge / Empire Building / Strategy / Manipulation / Political Intrigue / Power Struggle / Ambition / Adventure