MTL - Arbor Siluo Depend on Each Other - Chapter 813 How is this better than modern?

Idol show for dead people?Rayen was suddenly thrown into a supernatural idol show after meeting an untimely death at the peak of his career as a band vocalist.Upon waking up in a strange building, with a creepy stalker fan claiming to have written his entire biography, and a strange jukebox demanding him to perform, he learned of his death and found himself in a bizarre situation.[Please select a song to dance.]“What? Dance? I don't know how to dance!”[Select a song or disappear?]“Ain't no way I'm gonna dance!”[If you want to revive, become an idol.]“Screw revival! I don't want to dance!”

I originally thought this was a world like an ordinary urban novel…Drawing comics by myself, traveling is pretty good.
But tell me, what happened to this magician called “Emiya Kiritsugu” who jumped on my face?
Who changed the settings?
Currently involved in the content of “F/Z”, “F/SN”, “Fantasy Carnival”, “The Emiya’s Meal”, “The Holy Grail of the Imperial Capital”, “FLA”, “Elmello II Event Book”, “FGO”, “FE”, etc.
Others related to “JOJO’s Bizarre Adventure”, “Rebellious Lelouch”, “Persona 5”, “Attack on Giant”, “Death”
“FGO”, “FE Series”, “FA”, “FSF”, “Cangyin”, “Magical Girl Illya” will be involved next…

- Description from novelbuddy

In a world of endless star fields and interdimensional wars, the wizards' floating city conquered one world after another.At the wizard academy, through blood-stained exams, the towering wizard tower sent wizards batch after batch.Becoming an apprentice wizard, Richard activated the miracle furnace deep within his soul, where constant refining of materials granted him knowledge and skills...The veteran's weapon could be refined into legendary martial arts techniques.The ancient wizard's encrypted notes could be refined into lost knowledge.The remains of brutal monsters could be refined into monster bloodlines.In this era of great voyages in the wizarding world, Richard was destined to become a leader of his time.

In a world where most wolves her age have already found their mates and embraced their destined roles, one she-wolf remains unmated—not out of bitterness, but because a deeper calling stirs within her. Haunted by a vivid dream that feels more like a prophecy than a passing vision, she begins to question whether her life was meant for more than becoming someone’s Luna. As her family pleads for caution, she stands at a crossroads: remain in the safety of the familiar, or follow the pull of fate into the unknown, where purpose, danger, and destiny await.