Mijuku na Futari de Gozaimasu ga

This is the story of Ikuma and Sumika, a young couple who grew up together and recently tied the knot. On the surface, they appear to be the perfect newlyweds—except for one little issue. Neither of them has any experience with intimacy, leaving them completely clueless about how to take that next step in their relationship. Now, these awkward lovebirds are stumbling their way through their first time together, trying (and often failing) to figure things out as they go.