Investment Return System, Start by taking Demon Empress as a Disciple - Chapter 104: The Second Ability of the Heavenly Demon Technique: Divine Manifestation of the Heavenly Demon

One day a young man found a mysterious door in his grand father house and that door transported him to Tensura....welcome to the new world...all the credit for the characters and main story goes to the owners, this is just a fanfic none of the characters or the storyline belongs to me...Tensura won't be live until later in the chapters, so if you in a rush, you can quick rocks...

After his death, Weiss S. Albus woke up under an unfamiliar ceiling. What came after a successful transmigration was none other than the memories of the previous owner’s body.Transmigrating into the modern world Blue Star, Weiss was confronted with a system screen in front of him.[Weiss, two months from now, the invasion from another world will destroy Blue Star. You need to prepare and let the entire human race have the power to defeat those invaders! Become a God-Level Game Developer!]Hearing the sweet yet resolute voice from his system spirit “Alice”, Weiss immediately made countermeasures!Invasion from another world? Create the Idle Tower Defense Game and make the defense of Blue Star invulnerable! Those flying lizards (dragons?) were shot down from the sky by a homing meteor turret!Lack of experience in dealing with a wave of monsters? Zombie Survival Online has been developed! Waves of evolved zombies, the hands of the military were numbed after playing the game!The humans need summoned monsters to fight alongside them for support? The Pocket Monster Game was created just for that purpose! Armed with dimensional pocket balls, the players gazed at the monsters and shouted “Gotta imprison and enslave them all!”As if that wasn’t enough, mages and warriors from another world invaded Blue Star! Weiss immediately developed Fantasia Online and let those aliens get a taste of their own medicine!After awakening the God-Level Game Developer System, creating game worlds that was no different from reality itself became the norm for Weiss Albus!“Invasion from another world? Let the human race treat this as nothing but a game! I, the God-Level Game Developer, approve!”Life is a game, but a game within a game? Only the God-Level Game Developer Weiss S. Albus can develop it!

You Liangxing would never open the speech function in game.
That was because his voice was…
Particularly! Kittenish!

But there was one day, he queued up with a teammate who had so much to say that they may as well explode. Vexed to the point of no return, he contributed a voice that was capable of splitting heaven and earth, “Don’t BB.”
The other party who was being scolded stilled. In the ensuing silence, he suddenly let out a long, relishing… Moan.
You Liangxing: “…..”

Later —
He realised that the person was a great god,
Much later,
Without him realising,
He became the great god’s royal healer.
…. And also his boyfriend.

- Description from Novelupdates

[You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be.