I'm looking for an isekai manga. In it, the main character and his class are summoned by a goddess, but they decide to send someone back to tell their families. The protagonist “goes back” but it was a trick by the goddess and the mc was dropped in a forest full of monsters and given the curse of the hero (he can only talk to species considered enemies of humans).
In the forest he runs into an abandoned god/goddess, and he explains to the god/goddess what a loner is, so the “Loner god” gives him the blessing of the loner which makes him immortal, but he can’t level up because of the regeneration.