The Yu Brother's Case Book - Volume 1 Chapter 3.3

[Naruto + System + Blackening + Cool Text]

Fengxu travels through the Naruto world and becomes Naruto’s suppressed blackened personality.

After experiencing all Naruto’s experience, he can’t repay grievances with kindness, let alone forgive!

Since the main personality has nothing to do, then his sub-personality is in charge of everything!

Bullied Naruto’s kill! Framed Naruto’s kill! Want to master Naruto’s kill!

At the same time, Feng Xu continued to weave a web to eat away at Naruto.

“Naruto, do you know the difference between a king and a mount?”

“Naruto, all the suffering in this world is caused by the lack of ability of the person concerned.”

“Naruto, you can’t protect anything, you just kill everyone.”

“So, give your body to the stronger me.”  …

- Description from novelbuddy

I had been abroad to do medical volunteer work, when I was swept up in a civil war. I was killed by a rebel soldier, while taking a bullet for a patient. But when I finally woke up, I had become a child?!?And in front of me stood a destroyed carriage and a group of oddly dressed people, who were unconscious!“It’s just like a Murim world.”As I hurry to perform first aid in an attempt to save even one person, I realize that this world is that of [The Supreme Demon King], a Wuxia novel I’ve enjoyed reading.After meeting the rescue team of the ‘Three Great Doctors’, I found out that one of the person I saved was the protagonist of this novel, the future Demon King ‘Yeo Haryun’!“Hey, since I’m indebted to you for saving me, call me ‘hyung’.”For saving his life, I become sworn brothers with the future Demon King, and the White Dragon Godly Doctor, one of the most knowledgeable people around, recognized my potential and took me in as his disciple. This is the story of how I became the greatest physician in Gangho!

On his usual way to home Mikado Tsuchio fell into a hole that suddenly opened on the ground. Just like that, Tsuchio falls in a different world, he lands on a Grappler Wyvern and manages to tame it.

Tsuchio decides just like that to live in the other world, the reason for his quick decision: he wants to make a monster girl harem.

This is a story of a man named Kim Sae-Jin, who one day, inexplicably wakes up as a Monster. Follow him and his perilous journey to get his life back as a Human, all the while growing even more versatile as a Monster in the process. This should be… complicated, somewhat.