The Invincible Army of Heroes Is in Another World

I accidentally came to another world. Although there is a castle with invincible heroes, as long as I have money, I can continuously recruit powerful troops: Lancer, Archer, Griffin, Swordsman, Priest, Knight, Angel You can even recruit some special troops such as: Phantom Shooter, Magic Mage, Purple Dragon, Poison Dragon, Crystal Dragon and Holy Dragon However, he does not have any ambition to dominate the other world. He just wants to live peacefully with the woman he loves. But sometimes such a small hope cannot be achieved, For the sake of his beloved woman, he vowed to build the strongest human empire and return all the shackles imposed on humans by alien races. He vowed to lead humans to defeat all alien races and let everyone know that humans are the spirit of all things. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.