Fudanshi Shoukan: Isekai de Shinjuu ni Hameraremashita 6th Season

Kotone and the divine beast Nagi continue their life as partners in the other world, where affection binds them more strongly than the summoning that first brought them together. New matters involving divine beasts and the people around their household test the trust they have built.

As responsibilities grow, the couple must protect their bond from misunderstandings and outside expectations, learning again that devotion requires choices neither destiny nor instinct can make for them.