The supporting character's harem is very normal - Chapter 52 Their relationship is too complicated.

Jack regarded himself as the greatest failure in the world; a broke unemployed law student who does nothing but laze around all day.This was until he was chosen by the Urban System.[Urban System Activated.]With its activation, the system elevated him beyond ordinary, gifting him the kind of video-game skills only protagonists possessed… and exposing the world’s real, long-buried truth.In reality, no human in the world was actually human. Everyone were descendants of fantasy races, each possessing strange powers and abilities that was supposed to exist only in myths and legends.Moreover, with the activation of the system, he had inherited the fate of the previous user who live the truth of the world all his life.Now Jack must confront that destiny, facing the dangers of a world far more fantastical… and far more perilous… than he ever imagined.

Lingyun, a fierce and savage cultivation genius takes over a dead teenager’s body. Coincidentally, they are both named Lingyun. Set in a alternate version of the 21st century, teenager Lingyun has been killed by someone with a grudge.

Gu Ji, a cadet at the SWAT Academy, downloads a game called Crisis Management. After he clicks it, he has been thrown into the game's world. After he beats an instance, the same event would happen in the real world.“Your Choice：Stamina Boost (Small)】or【Combat Specialization (Small)】”

He was a Martial Arts prodigy, a master of using poisons!He descended the mountain to search for his junior sister but unexpectedly became the School Beauty's bodyguard… From then on, a demon-like student was born! He pursued the School Beauty, took down bullies, and was revered as the supreme ruler of the city! He cultivated Ancient Martial Arts, annihilated formidable enemies, and swept across all directions to ascend to the Peak.