Isekai De Kekkon Soudansho Hajimemashita summary:

Mien Sotono, who works at a marriage counseling agency, is trying to protect a couple who have arranged a marriage and is hit by a car. And when she woke up, she found herself in a different world filled with values different from modern times!! Mien opens a marriage counseling agency in order to survive, but “marriage hunting” is extremely difficult in a world with different cultures and common sense. Is it in hard mode…!?