Slow Life with Synthesis Manipulation

"Having a System is a good thing but sometimes having a System is not a good thing, because the probability that the God who created the System is a good person cannot be calculated. As they may try to manipulate you into becoming a person with distorted personality. The most terrible thing is indifference towards life as it leads to often putting loved ones to danger while the system will send missions to offend powerful figures just for the so called pride. Of course even without a system there are such figures as yun che from against the gods etc. " Seeing five gods creating systems to play with humans like devils just for their own enjoyment, the Supreme God Above all was irritated and just erased them, and wanted to find five good people who will be able to replace them and for the first person he spent 10 months (equivalent to 10 years in human world) to create a single skill that not only has unlimited possibilities but also not manipulative towards it's host and It is called Synthesis Manipulator. After creating the Synthesis manipulator, the Supreme God started choosing the first person who will get it. Want to find out who the Supreme God chose as the first God and gave him the skill Synthesis manipulator??? Stay tuned... And the remaining four people and their skills will be discussed in future novels. Note: The MC is a honest and a bit cunning boy with good family background. There are no cliche like parents dying and leaving him alone. His parents love him and he love them too. (Take the hint why Supreme God chose him) Genre: Male Lead, Slow Life, World Travel, Harem, Dense Protagonist, Smart MC, Beautiful Female Lead, Comedic undertone, Overpowered Family, Super Skill, Pleasant Romance. PS: The following worlds and fictional characters from them do not belong to me but to their respective Authors. Please forgive if my book is not to your liking.