Moto Sekai Ichi'i no Sub-chara Ikusei Nikki - Chapter 72: Relaxation Journey, Second Day

[ Mature Content Ahead! ][ Warning: Narcissist & Coldblooded Mc, Narcissist System ] [ You can Skip volume 1 which is simple slife of life + Smut, All Mc does is cuck the top four families and a sect master ][ The above suggestion is must if you hate slow pace smuts, also please purchase privilege and help me in Win-win, 180 coins for 50 chapters ][ Foot fetish & neck fetish ]This book has nothing special aside from how you can alter the fate of Main character.You can choose a option.Ding! Mc has found a girl.1. Add her to the harem2. Kill her.[ The choice lies in your hand]

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Born into a wealthy family, Gu Shenwei was spoiled and carefree. However, at the age of 14, his entire family were brutally murdered, and he was caught by some bandits who sold him into slavery. As a slave boy, he entered Golden Roc Fort by chance and found the man who had slaughtered his family. He endured insults and worked hard to improve his kung fu while working as a slave boy. He learned from and plotted against his enemy under the enemy’s nose. He became increasingly ambitious as he became more and more powerful. He would only be satisfied if he completely destroyed his enemy—by fair means or foul. Gradually his bitter experience turned him into a totally different person.

Police officer, would you believe me if I say this is an Iyashikei game?