Maybe a Fake Gintama - Chapter 5: [Monster] and [Little Monster] and [Son of Monster]

kingdom-building video game. Now the lord of a struggling FF-rank village, Rowan is tasked with an impossible mission: to transform his village into an unrivaled SSS-rank territory.Fortunately, Rowan wasn't left alone as his rewards reflected before his eyes.-SS-rank 100x Reward-SS-rank Copy-SS-rank Merge-SS-rank..-....Armed with these powerful skill, Rowan set out to build the greatest territory and become the unrivalled lord!

“Black Myth: The Destined One” the mobile game, sent Li Ping'an back to the Journey to the West World where deities and Buddhas had perished, demons roamed freely, and the Three Realms had collapsed. The longer he survived, the stronger he became.Cultivation, Divine Skills, Side Techniques, Magical Treasures... and the like were obtained from the game and could even be taken back to the real world.Black Bear Spirit Bodhisattva, Shadowy Moon Demon Lord, Howling Celestial Dog, Hundred Eyes Demon Lord Bodhisattva, King Huang Feng Bodhisattva, Old Buddha Huang Mei... One after another, those claiming to be immortals, Bodhisattvas, and Buddha Ancestors fell beneath his staff.Only after he had acquired wealth and status in the real world through the Cultivation, Divine Skills, Side Techniques, and Magical Treasures obtained from the game, did he realize that the real world was nothing more than the Nineteenth Layer of Hell in the Journey to the West World...With an undying heart, at ease and carefree, the Destined One Li Ping'an embarked on Journey to the West once more!

Hell Ghost Wang Wannian is born again, smiling and proud!
What?
Are you a soldier, will the tank drift?
You are a master, can you give birth to dragons and tigers?
You are a superman, can you call the wind thunder?
Excuse me, I am not targeting anyone, everyone in my eyes, it is rubbish!

- Description from Uukanshu (translated)

“From today onwards you are no longer my son. Get out” Being born into a noble family that is aiming to become the ‘strongest’, at his aptitude ceremony held on his 12th birthday it was discovered that Igni could only use fireballs. Igni who can only use beginner level magic was kicked out of his house.

With no where to go and without much magical ability, Igni is scraping by through life. However, one day he has miraculous reunion. “What? Is that Igni there?” “Gr-grandpa!?” It was a reunion with his grandfather, the man who was once called the strongest [Kyokuten] but was banished from his noble family because of his excessive womanizing…! “Grandpa! You said strong men are popular, but I can’t be strong!!” “Igni, listen carefully. Strong men are popular but, hard-working men are even more popular!!” “Grandpa! I’ll try my best!!!” Igni whose parents who banished Igni from the house, didn’t yet know of his obsession with being popular under the guidance of the strongest [Kyokuten] magician…!

“Igni that magic!” “This? It’s a fireball” “With this you can aim for [Kyokuten]! Come back here!!” “Nobility isn’t popular” “What are you saying?” This is a story where a young magician becomes the strongest by honing his skills all in order to become popular.