MTL - The Age of Giant Ships and Cannons - Chapter 300 Galaxy changes

There is always such a person in the world who likes to take their ex/Bai Yueguang/best friend as a stepping stone for their love.
These exes/Bai Yueguang/Girlfriends are called female supporting roles. They obviously did nothing. Just because they were involved with the male and female protagonists, they were trampled on, hurt, and even left a shadow that will never go away for a lifetime.
Jiang centrifugally felt sorry for those innocent girls, so he traveled from one world to another to help them cross that hurdle.
However, after a certain world, the mission is obviously wrong.
Jiang Li: “I will treat you well.”
“It’s not enough.” The girl imprisoned Jiang Li in her arms, breathing warmly: “Don’t leave, you must always be good to me, only to me.”
Jiang Li: ? ? ?
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Finely divided slice attack x natural sweet and soft feeling
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World One: Campus
The taciturn facial paralyzed “bad girl” x the rich lady who is cold on the outside and hot on the inside
World II: Cultivation
Swordsmith x Sword Spirit

World Three: The World of Beasts
Orc Princess x Totem (Big Cat x Little Rabbit)
World Four: Game of Death abo
Tsundere Big Brother x Super Rookie (Double O)

World Five: Spirituality
Ghost King x Rookie Celestial Master
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Edible guide:
#1v1 Unshakable
#Su Shuangwen, everything is for Su Shuang
#gongjing is divided into slices, being indifferent to others, sweet and soft to attacking

Content tags: system sweet text fast wear cool text
Search keywords: protagonist: Jiang Li ┃ supporting role: a lot ┃ others: fast wear, system, sweet text, mutual favor
One sentence introduction: you are sweet

- Description from novelbuddy

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.

In the Sky Sword Continent there are thousands of sects and strong cultivators as common as trees. In order to prevent his older sister from being forcefully married off, Lu Xuan had no choice to but to unceasingly cultivate and enter a sect to ask for a favor. By chance, a sword-shaped crystal of mysterious origins entered into Lu Xuan’s body, containing countless top-class martial skills, powerful martial arts, and everything you could wish for! A martial legend starts here…

- Description from Novelupdates

Three rejections. Three shattered dreams. That was Layla’s reality, all because she was different—a half-shifter in a world obsessed with purity. Ostracized, shunned, and finally sold off like a pawn to the most feared ruler alive—the Lycan King. He was ruthless, a king with a graveyard of brides, each one a ghostly reminder of a fate worse than death.Layla loathed him. Hated the way his gaze cold and fathomless, held no warmth for her. Hated how his touch, both thrilling and terrifying, sent an uninvited chill down her spine.---“I hate you!” I screamed, hands clenched so tight my knuckles ached.He sighed, a smirk curling at the edge of his lips, his tone mocking as he closed his book with a deliberate snap. “Stressed, are we?” he asked, strolling toward me, each step reminding me exactly who held the power here.“Lucky for you,” he drawled, rolling up his sleeves as he stopped just inches away, “I know exactly 70 ways to ease those nerves.” His fingers brushed my cheek, a touch that seemed to burn into my skin. “The first… a hug.” His voice dropped to a rough whisper as he leaned in, breath hot against my ear. “And the rest... well, that's 69? what do you say about that?”I swallowed hard, my heart thudding wildly as he tilted his head, waiting for me to react, that insufferable smirk still in place.“What’s the matter, darling?” he murmured, a taunt lingering in his gaze.---A Dangerous ObsessionCan she resist the pull, or will she dance into the flames of her own destruction?A dark dive into obsession, raw need, and the razor’s edge between desire and devastation.---LYCAN KING CASSIANI will tear her apart piece by piece, feeding the wildfire that grips her with each shuddered breath. Like air to flame, I’ll claim every inch, drawing heat from her skin until it sinks into her bones.Her pulse will race under my hands, her breaths shallow, pleading. Her eyes may scream, but her lips will still murmur my name. That first taste of fear will only feed something deeper—a need that burns through her veins, molten and fierce.And just when she’s too far gone to turn back, I’ll twist the knife, giving her the pain she’s learned to crave.She’ll be the moth to my flame, helpless against the very thing that will consume her.