Premieres July 2025. Check out the ANN article for additional information. Synopsis for the source novels from AniList:
Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction. As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!
I watched all the seasons!
The main character does free slaves, but his companions voluntarily re-enslave themselves to him because he is such a great guy.
He gets screwed over by the royalty, until the queen is back in the picture and then the royalty is totally in his corner and the woman who falsely accused him of rape (the chuds greatest fear) is publicly shamed and humiliated for it (the chuds greatest desire).
The plot serves as a permission structure for someone to indulge in their darker fantasies while still feeling like a moral human.