Memory Lost - Chapter 8: Handsome bastard

Ryouma Takuma, a 39 year-old man with a hidden past, finds himself in a strange white room. There the gods tell him that he has died and that they are sending his soul to a different world; a world where magic exists. After living alone for three years his gamer soul loses common sense and starts toward crazy routes.

[SoL Heavy][Ding! SSS-Rank Service System Activated!][Ding! Daily 10x Reward Multiplier Initialized!][Ding! Job Gained: Junior Sanitary Engineer!]Reincarnated as Dorian in a fantasy world, a PhD student in Business and Marketing decides to become the richest man alive with the help of a system and also improve his new world's economy.Dory doesn’t need a sword to win. With his SSS-Rank Service System, he treats every small job like a big business deal. His 10x Reward Multiplier turns simple work into a mountain of money and gold.[Ding! Skill: Material Restoration Acquired!][Ding! Skill: Spatial Optimization Acquired!]He can make old, rusted tools look brand new. He can organize a messy shop so it works faster and better. He is bringing modern skills to a world that is dirty and slow. Whether it is a broken house, a messy warehouse, or a poor kingdom...Hire him to fix anything and everything! Cause he has an SSS-Rank Service System!**********What to expect:Very Slice of Life: A chill story about doing a good job and growing a business.Low Stakes: No big scary battles. Just fun, work, and making money.Smart MC: A PhD student using modern ideas to fix a fantasy world.Modern Jobs: Using modern professional skills to change the world.Road to Riches: A slow and happy story about becoming the wealthiest man alive.Harem: A focus on romance and relationships (No Smut, No Yuri, No NTR).

Coming to my senses... I find myself a desperado.In the depths of azure, black sails flutter.Treasure gleams, blades ring out.Pillage, slaughter, irreverence towards the gods.Youth fades swiftly, all but meat and wine for pleasures.[Slice of Life][Romance Simulation][Business Simulation]

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates