The supporting character's harem is very normal - Chapter 16: Evolution…

Damian, a Centurion of the Punishment Unit of the Baroque Kingdom. “Damn it.” Just once. If I were given just one more chance… ‘I would have truly conquered the battlefield with these guys.’ At the age of 30, he closed his eyes on a nameless battlefield. But when he opened them, he found himself back 17 years in the past. And this time, he had a perfectly functioning mana core that could wield magic. ‘This time.’ I will rise higher than anyone else. I won’t be swept away by the turbulent times. ‘I will conquer.’ Damian, who has returned to the past, wields his spear toward the world.

Rhodes accidentally tripped and fell while playing with his phone as he walked down the stairs, only to find himself transported to the world of Fairy Tail.To his surprise, he discovered that he had the ability to summon various wild monsters from League of Legends and even learned how to use Receive Magic.But that wasn’t the main issue. The real problem was that, among a guild full of reckless individuals, there was suddenly someone who actually liked making plans.Some people believed he was destined to become the next guild master.But Rhodes knew the truth—becoming the guild master of Fairy Tail meant endless self-reflections and a never-ending pile of compensation bills.Determined, Rhodes made up his mind: I don’t want to be the guild master!

After binge-playing a game for seventy-two hours, the single-player streamer Yang Yu, who made his living selling game guides, quietly passed away in his bed.Unaware of his own death, he was invited by a deity to conquer an RPG game, and was persuaded into choosing the hardest civilian starter.Couldn't even defeat a single slime after leaving the novice village? Want to learn a taunt skill but have to actually verbally taunt? And the gacha only yields trash?Faced with numerous hardships, he actually... got excited.A true gamer never fears challenges; they only fear the game being too easy.As his sparse panel began filling out, Yang Yu felt an unprecedented satisfaction swell within him, and he became addicted to making waves, unable to stop himself.'Hey? There seems to be a lone hero up ahead. Watch as I turn him into a unit of combat power! Damn, I’ve been spotted. Hero, don't run away!'

This book is about baby-making.