Description:

Jin Mita, a farmer in the countryside, discovers a female knight lying in the rice field. When he asks the female knight, who calls herself "Seraphim," about her story, it seems that she came from another world. The female knight, who was thrown out of modern Japan, naturally has nowhere to go, so Jin decides to live with her in exchange for her help in agriculture. Jin teaches Seraphim, who has no common sense at all in this world, about agriculture, society, and rural culture. However, they look like a married couple to everyone around them. ...... Before long, she is considered to be Jin's wife...! (Source: Dengeki Bunko, translated)

Alternative Titles:

田んぼで拾った女騎士、田舎で俺の嫁だと思われている, I Found a Female Knight in a Rice Field, in the Countryside They Think She’s My Wife