How a Former Pro takes advantage by doing an easy job - Chapter 45

Age Progression, Alchemist/s, Concubine/s, Cultivation, Fallen Nobility, Famous Protagonist, Fantasy World, Genius Protagonist, Hard-Working Protagonist, Hated Protagonist, Hidden Talent/s, Hiding Power/s, Hiding True Ability/ies, Illegitimate Child/ren, Inventor Protagonist, Inventor/s, Isekai, Loved Protagonist, Magic, Maid/s, Male Protagonist, Mana, Mother and Son, Multiple Lives, Nobility, Noble Protagonist, Overpowered Protagonist, Poor to Rich, Prince Protagonist, Prince/s, Reincarnated in Another World, Reincarnation, Royalty, Slave Labour, Slave/s, Slavery, Territory Management