MTL - The Legendary Mechanic in Marvel Universe - Chapter 593 Leo is there

Arthur Grail, a hardcore player of the VRMMO Trinity Star Online, woke up one day in the body of Gerard Astoria—a petty villain fated to die before the main story even began. To make matters worse, Gerard's death was a crucial event in the game's narrative. If he didn’t meet his predetermined end, it could disrupt the story entirely, leading the universe toward one of the countless “bad end” routes!Unwilling to leave his fate to chance, Arthur decided to take matters into his own hands—recruiting the “player” as his partner to help him clear the game and rewrite his destiny.But wait—“Why is the player not a dude but a sharp-tongued beauty instead?!”Follow Arthur's odyssey, filled with trouble at every turn, as he works to uncover the mystery behind his awakening in a universe eerily similar to Trinity Star Online's setting, all while trying to save the entire universe… without forgetting to enjoy himself!

Quenser and Heivia came back from their one week vacation. The next stage that awaits the two is the experimental battlefield ‘Madagascar’, a huge island on the east side of the African continent. Quenser and the others have been sent to destroy the second-generation object from the Faith Organization: Trinity Style. The worst tropical night ever begins now!

Heavy Object EX chapters are being released with each volume of the Heavy Object anime home releases (blu-ray / DVD) in Japan.

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.

“Ah, Young Master, Cassius?...I'm afraid you'll be dissapointed to hear that he's not available at the moment as he's 'attending' to his adopted mother in her room.”Cassius's lovely maid, Isabelle said in a fluster while she heard lewd sounds escape from her Mistress's room.“No, I'm sorry to say that you can't meet Young Master today, since he's 'helping out' his sister-in-law with some 'favours' in her garden.” The innocent Isabelle excused herself as she witnessed her lady's flower being picked, instead of the rest of the flowers in the garden.“I hate to say this sir but Young Master, Cassius is currently guiding Miss Knight in the 'ways of the sword', so you can probably only meet him tomorrow.” Isabelle once again blocked the guests from entering, knowing that the sword her Young Master was handling could penetrate a body, but could never wound one.“I apologise once again as Young Master is at the Capital right now teaching a class to the female students in the Academy.” Isabelle said with her cheeks flushed, already knowing that her master was taking a very 'practical' lesson about human reproduction with the girls in his class.“Oh my! The King wants to meet the Young Master?...Well I guess he'll have to wait since Young Master, Cassius has gone clothes shopping with the Queen.” Isabelle lied to the King himself, knowing that her Young Master wasn't shopping for clothes and was actually removing the royal clothes off the Mother of the Country.Excuses...Excuses...The loyal maid, Isabelle had no choice but to make excuses for her Young Master, who was the most talked about and hated noble on the Continent because of his depraved escapades with all sorts of woman ranging from his own Family to Royalty itself and his Tyranical rule over his estate.And to think that not too long ago he was considered a wastrel noble, who was going to drink himself to death one day....When did it all begin she wondered as she excitedly walked into his room to get the reward she deserved for being such a loyal made, while someone else made excuses for her this time.•°•°•°•°•°•°•°•°•°•°•°•°•[No NTR - No Yuri - No sharing - No system that assists the protagonist - No mind control - No drugs or potions that influence the girls - No unnecessary Drama - Incest - Harem - Hardcore Netori - Slice of Life Romance - Demigirls - Elves - Vampires - Beast Girls - Slaves - Royalty - Finally a very competent protagonist]