MTL - Marvel: Trading From the Ninja World - Chapter 22 Tsunade's visit

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…
When the world experienced a cataclysmic event,the majority of living things ceased to exist. Although humanity survived by hiding in the last safe zones, humans had to face mutated dire beasts and colossal source beasts that could break through the space barrier and enter the earth at any second.
Luo Yunyang, a young man who grew up in those calamitous times, obtained an attribute regulator and set out to walk the path of supremacy!

- Description from novelupdates

In this world, there is the beautiful mutual and telepathy love.

“If I told you about the darkness inside of me, would you still look at me like I'm the Sun?”******Annalise's life changed the very night she was married off to the Dark Lords who resided in the Cursed Castle. She was offered to them as a sacrifice to save their Empire.No one knew anything about those residing inside the Cursed Castle except that there were three of them, all men, and they all were very powerful.There was a dark force invading the peaceful lives of the people of Seelie Empire, people were disappearing and unseen things were happening. And the High Priestess confirmed that the Seelie Realm would need the help from the Dark Lords to win this battle against the unknown.Annalise ended up becoming the pawn as the only unmarried girl with royal lineage and the title of a Princess. To show their sincerity about the treaty, the royal family offered her hand in marriage to the Dark Lords, and to everyone's surprise, the Lords agreed. But they had a condition - she needed to marry all three of them!To save her Empire and people, Annalise agreed to marry all three Lords only to find that none of them showed up at the wedding.How was Annalise going to handle her married life, and her three husbands who were not only handsome beyond words but also more powerful and mysterious than people thought? Especially when they had a great battle to fight!