The Ideal Sponger Life - 理想的小白臉生活 05 (Manga)

Manga adaptation of the light novel series. Zenjirou, a modern Japanese salaryman, is summoned to a parallel world to marry Queen Aura of the Capua Kingdom. As a 'sponger' husband, he navigates court politics, cultural clashes, and his own desire for a peaceful life, using his knowledge from Earth to subtly influence the kingdom while trying to maintain his low-profile ideal.