My Checkpoint System Turned Me Into The Godfather of Humanity - Chapter 375

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

Originally from the slums, Adam was chosen as a candidate for an experiment to ignite the Spark - an entity that gives superpowers. However, he failed and was thrown into the Dead Lands - the place the world became after the fall of the Last Star, beginning a new era for mankind, dangerous and unexpected. He faced against monsters and dangerous anomalies, sometimes creating artifacts - the miracle of this world.Killing his first monster in deadly combat, Adam became a Phantom - one who could evolve, endlessly moving toward power.Follow Adam on his journey, from fighting monsters and exploring Dead Lands to endless evolution!

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

No family, no power, no inheritance — a thrice-lacking protagonist. Just how will the seed rise up from the mud?

- Description from Novelupdates