Rebirth: Splendid Marriage in the 80s - Chapter 25 - How Thick-Skinned

~My Lovely Harem School Life~Just like the cringy name suggests, it's a well-known dating sim that gained popularity due to the beautiful heroines, fun story, and most importantly, the significance of the player's choices that influence the endings....But why did I end up transmigrating into the scummiest character in the game, Yagami Reiji, the heir to the biggest Yakuza group in the country? The trash that harassed the main cast, the trash that bullied the students, and the trash that ultimately 'steals' the heroines if the player makes the wrong decisions.Why, God, Why!?Will my predecessor's past, a horrific mess, haunt me? Will my father, the King of the Underworld, accept me? Will the characters, now a reality, still hate me?I decided to live a regular life, slowly taking the steps to whitewash my reputation..... With an occasional punch thrown here and there......Wait, why is the original protagonist a complete idiot?

[Ding........ ][System Binding.......][10%..........][20%..........][40%..........][60%..........][80%..........][100%........][ Congratulations, Host! The Strongest Family System has been bound! ]----------------------------“Huh? I’ve transmigrated…” Arthur muttered, his voice barely above a whisper as he surveyed his bewildering new surroundings. Confusion washed over him like a tidal wave.-----------------------------Arthur was just an ordinary corporate worker, an overworked cog in the relentless machine of corporate life.After seven grueling days of nonstop overtime, his body finally gave out, collapsing right before his computer screen at home.He thought that was it; he thought he was dead. But little did he know, fate had something extraordinary in store for him.Instead of fading into oblivion, Arthur found himself thrust into a vast and unfamiliar world, one ten times larger than Earth itself!To his astonishment, he had become the head of the Osborn family, a once-mighty lineage now teetering on the brink of destruction.Bound by the standard configuration for all transmigrators: The System which is the [Strongest Family System ], Arthur faced an epic challenge: to transform the faltering Osborn family into the most powerful dynasty in existence.Join Arthur on this thrilling adventure as he navigates treacherous waters filled with intrigue, power, influence and danger.Can he lead a declining family back to glory and secure their place at the top?

A tree of 10,000 flowers, the world is the door.
The spells change a lot, but the hearts of the people are unchanged.

- Description from Uukanshu translation

As the ruler of a munitions empire, Tang Mo unexpectedly fell and was transported to an entirely different world, where he also unexpectedly acquired a “King of Munitions” system.In this underdeveloped world, Tang Mo relied on the abilities granted to him by the system to drive the development of the entire world.After all, the desire for civilization conquest had always been the driving force behind progress, and life had continuously evolved between attack and defense over tens of millions of years...So, selling assault rifles to these archers and training knights to be tank operators... there shouldn't be any problem with that, right? XD