MTL - Become The Guard AI Of The Lost Civilization After Transmigration - Chapter 199 this is a relic

Depth-Dwellers are long extinct.All except for a single one..Waking up after being dragged by the pressuring tides, Cetas finds himself in the middle of an unfamiliar ship, greeted by a distinct group of pirates.Without any knowledge about humanity at all, he traverses the seas with the unknown band of pirates and learns about their culture and speech. In a world where 'Zeal' serves an essence for humanity's power, Cetas must learn to ascend the ranks to protect those that he cherishes.For when the mysteries beyond the fog arises, the Dreadspawns begin to wreak havoc, and the Leviathans rise up into the world..'Would Cetas become a 'human' worthy of saving those that he loves?'

Van and his friend Magus had reincarnated in another world with magic. Tasked to kill the demon lord, they set forth.Van was granted very rough skills that made life for him in that world a living hell, yet he muscled through.Magus however, was bestowed with unfair skills. Due to some of said skills, he gained a harem, which in time, included the girlfriend Van made in the world.After beating the Demon Lord, and after finding out his girlfriend had been stolen from him, he got very upset and so he went to propose to... The Demon Lord...!?

With a breath left, Hope is immortal.

Possessing Martial God bloodline, shouldering great responsibility,

carrying the clan’s enmity, with his dreams, Wang Chen treads on the

Martial path.

Killing enemies, searching for the Martial Dao, his name moves the

whole world. Leading the clan, leading the declining sect, he begins

his journey, welcoming challenge after challenges.

The path to his aspirations is full of difficulties and endless slaughters.

Let us see how he overcomes his challenges. With the Martial God

bloodline, the sovereign descends the world! With Supreme body,

reaching for the Heaven!

- Description from Novelupdates

Oosuki Masato is an ordinary high school boy who is magically transported to an alternative world, but for some reason his doting, over-protective mother comes along as well.