Monster Girl Menagerie - Celestial Archive - Chapter 68 - 66 - Heart to Heart

Suzuki, an adult programmer, suddenly notices that he’s been thrown into a different world while wearing a casual clothes at level 1. He gained high levels and treasures after using the 3 times use-disposable-magic, Meteor Shower, at once. After that he intends to do different world “sightseeing tours”?

He meets 3 beast girls, beautiful purple and black haired sisters, and an eccentric blonde haired elf girl along with various people during his trip. Although there are occasional fighting with demons and demon lords, this is a heartwarming fantasy story at heart.

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

[ Mission completed successfully ][ $200,000,000 have been transferred to main account ][ Mission completed successfully ][ $1,000,000,000 have been transferred to main account ][ Unique key to a private Island has been transferred to Inventory ][ Ancient Relic: Excalibur has been transferred to Inventory ][ Skill Book: Dark necromancer has been added ]Awesome, isn't it?This became the regular lifestyle of Alister Ashworth, a poverty-cursed orphan who, following a torturous encounter, awakened the Infinite System, granting him the ability to travel through countless dimensions and realities, complete quests and engage in unique and ancient stories and obtain extraordinary rewards.Was it money? Fame? Treasures? Magic? Or even immortality?With the Infinite System, all these and even more could be achieved, although a deeper mystery quietly beckoned from the shadows!