The supporting character's harem is very normal - Chapter 14: Elemental Stone

[The citizens of planet #674589 has been given the opportunity to awaken.]With this abrupt message that appeared out of nowhere, the world as everyone knew it had ended.A series of apocalyptic level of natural disaster washed over the Earth, claiming numerous lives in the process.Every lifeform on earth that managed to survive the apocalyptic natural disaster was given immense power.Animals metamorphosed into terrifying beasts and various plants gained self-awareness, while the surviving humans gained powerful supernatural abilities.Leo, a young man finally left the orphanage, a place he'd called home for his entire 16 years of life. With his dreams of finally breaking free and experiencing adult life outside of the orphanage finally coming true, his world was turned upside down after receiving the message with the rest of the world.Freedom was no longer something given, it now had to be earned. This apocalyptic and ruined world was something that could take kill him in an instant.[Requirements met. First Seal Broken.][Innate skill awakened: Regeneration.]

A chance to change, to challenge destiny, making dreams a reality, and live a legend! A regular man gains a system that allows him to turn into a fish!

I killed the protagonist.Yeah. He was a real son of a bitch.Noah didn’t just stumble into this mess. He walked straight in—grinning, sword in hand.One day, he wakes up inside his favorite game… as a throwaway side character no one remembers. A complete nobody. But when he figures out who the so-called “main character” is?Some smug, self-righteous psycho.So yeah—he killed him. No regrets.Story over, right?Not exactly.Because this world? It’s got one more player.“WHAT THE FUCK IS GOING ON!?”Now the story’s off the rails, the world’s gone completely off-script, and Noah’s got a new goal:Steal the hero’s spot. Rewrite the plot. Find out who the hell this other player is. And maybe—just maybe—make this damn story fun for once.