Life Simulation: Add Tags Starting with Wellness Technique - Chapter 7

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

Kazura was selected as the winner on a lottery that he bought on a whim and received ¥4,000,000,000 (4 billion yen).

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

In the final year of high school, Christian’s ordinary life takes a dramatic turn when he is struck by lightning, awakening the Idle System, a manifestation of his dream.What begins as a personal fantasy quickly transforms into a new reality for Christian, who revels in his newfound abilities while the world around him remains blissfully unaware.However, as Christian adjusts to his extraordinary circumstances, strange and unsettling events begin to unfold globally.Would the genre of the world also become Fantasy or would it stay exclusive to him?