The maid squad is too strong, what use is there for me, the Demon King?

Original world view (not fanfiction) + Western fantasy + overpowered protagonist + isekai (otherworld) transmigration (no system) + slow burn + illustrations (in the comments). A man dies in a hail of bullets, only to find himself reincarnated in another world as a demon king! Excited by his dream of becoming a shadow warrior, he's confident he can achieve his dream in this other world with fantastical powers. So he begins to build the Shadow Court, aiming to create an organization of shadow warriors. However, as the Shadow Court expands, he realizes something is wrong. He's the only male member, a severe gender imbalance! Is this a shadow warrior organization? Or my maid corps? Human leader: We are...