Osanai Fusai wa Itonamitai

After 10 years of chaste dating, Mr. and Mrs. Koyamauchi finally celebrated their wedding night together, but what was the strange thing that happened to them......? A romantic comedy about a couple whose love is put to the test, between a stubborn elementary school teacher husband and his wife who is much too cute (in a troubling way). (Source: ComicWalker, translated)