The supporting character's harem is very normal - Chapter 474 Peace before the Storm

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

When Bai Xun was bored, she played a dating game recommended by a friend. She entered the game and must keep up the affection with seven different types of men as the only way to clear the game. Only when she gets seven hearts safely can she go home? After many deaths, Bai Xun knew it, and could only live by paying closer attention!!

- Description from Novelupdates

After struggling for three years in the apocalypse, because of her mother's act of kindness, Ji Wanwan and her family were harmed by their so-called relatives and died horribly to the countless gnashing of zombies. When she opened her eyes, she was back three days before the apocalypse began.At this time, she had awakened the Super Shelter System.While everyone was engulfed in the zombie crisis, Ji Wanwan was lying flat in the refuge, collecting rent and recruiting underlings...When her enemies came knocking and her softhearted family once again tried to morally blackmail her into taking in those relatives, Ji Wanwan said—We're not close, stop claiming relations!Want to stay? Sure!Hungry? Sure!Want to freeload? No way!!!What? Still want to cause trouble? Then let the underlings throw the troublemakers out, offering them as a human flesh gift package to the zombies outside the shelter!This time, Ji Wanwan made it clear that she lacked virtues in her life, so nobody should even think about morally blackmailing her!In her refuge, she made the rules!But wait, what's up with these underlings?Max-level Water Element Superpower big shot: Wanna play with water? Carrying a water gun and squirting zombies, the kind that doesn't make a peep?Max-level Gold Element Superpower big shot: Do you like gold? I'll take the crystal cores from the zombies and make gold jewelry for you!Max-level Wood Element Superpower big shot: Like orchids? Fine, I'll make the zombies' heads outside grow full of orchids!Max-level Fire Element Superpower big shot: Want to see fireworks? I'll blow up all the zombies outside for you!Max-level Earth Superpower big shot: Zombies too ugly, hurting your eyes? Bury, just bury them! If they're buried underground, you won't see them!Max-level All Elements Superpower big shot: Step aside, let me handle this!Ji Wanwan: “......”

In this latest work by Lord of the Mysteries author, Cuttlefish That Loves Diving, be prepared for a well-thought out and detailed apocalyptic, cyberpunk world with a setting superseding Lord of the Mysteries!