Which main characters in novels obtained treasures that could gradually develop into a ghost realm?

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor. The Senior Brother wished to stay away from trouble so that he could live forever, but he was ruthless and crafty. On the other hand, the Junior Sister wanted to go against convention and conquer the Nine Heavens. She was ready to slay all kinds of enemies. [Ding! Congratulations on living peacefully for 100 years on the mountain. Your reward is 100,000 years of cultivation.]

Dying in a tragic accident Marcus Ferrous gets transferred to a fantasy world of monsters and magic, except when he arrives contrary to what he expected he is now level one and a ghost. Left with nothing on a strange new world, Marcus will struggle with everything he has on his journey to get stronger and uncover the secrets of his new world. Artwork By Radiopaque.

Caution: This novel contains R18 content. "Doomsday had arrived overnight. Zombies roamed every corner and humanity had suffered a massive setback. Faced with these terrifying zombies, Stark had thought that his sinful life was about to end. Suddenly, a [Divine-Grade Sign-In System] got bound to his body. He would receive rewards when he signed in every day. ""Congratulations. You completed today's sign-in. You received an SSS-grade Fallen Angel Pet."" ""Congratulations. You completed today's sign-in. You received an SSS-grade weapon, The Almighty Sword."" ""Congratulations. You completed today's sign-in. You received an SSS-grade ability, Zeus's Body!""..."

Bell Cranel was rejected by every familia he tried to join until he met Hestia. In a few, he was rejected quite violently. And in one particular instance, he was thrown out and bashed his head against a wall. Well, that's apparently where I come in. Not sure how and why I'm here. Not even sure who 'I' really am at this point since Bell's memories are definitely clearer than 'mine'... But I guess we're doing this. Hopefully I've got some useful cheats. Maybe?

While returning home from a boring day of work, a black hole opened up in front of John and sucked him in. Before he was floating in the blackhole, a helmet latched on to him. "Uploading A.I under progress...Activating Survival Kit" A weird robotic sound appeared within the conscious of John and suddenly a white energy enveloped him... After opening his eyes, John noticed he was teleported to a whole new world. A world of magic and he was a user of a system. Arkon, the world John was brought too, was a medieval world which is 10 times bigger than earth. This new world held many new mysteries and this was the beginning of John's adventure. John will dominate and stir the world with his new system. Old technologies begone and use my advanced techys instead! Ha! you want to hold a politic, economical and military war with me? Sorry but my system is too broken for you all to counter.

(Chapters re-written: 7,8) (Chapters to re-write:from 1 to 6, 9 to 61) Born in a rather particular family situation, Ethan finds himself having to face life with the desire of making his parents proud of him, from heaven. But, he didn't manage to do so because of an unfortunate accident, which caused his death. Now outside his own body, Ethan was afraid of having to meet his parents again, without having been able to fulfil his desire, but it is precisely at this moment that a voice speaks to him. [Would you like to be reincarnated?] Hearing these words, Ethan had various thoughts in mind, but, he understood that, with this, he could have another chance to satisfy his desires, and this, brought him to instantly say yes... [Your wish to be reincarnated into the world 1042, titled {Danmachi} has been authorized and granted by God] --- My own discord ID: watashiwavdesu#2029 (Author Notes: I will post one chapter a day) You should enter my server discord. https://discord.gg/cpVr5X8 *I do not own Danmachi and the cover*