Tashikani Watashi wa, Oyome-san ga Hoshii to Iimashita.

An unasked for love story between a cross-dressing prince who came to get marry and a cross-dressing miko who was rejected by the hero!

I was summoned to another world, and after defeating the Demon King, I was exhausted. As soon as I returned to the royal palace, I was rejected by the heroes and treated as a nuisance, and so I spent my days training to become a knight with the extra strength I was given during the summoning ceremony.

One day, a fellow knight asked me, "Is there anything you want?" So I answered, "I want a wife."

That was obviously a joke though!