The fûfu kôkan: Tonari no wakazuma no aji (1995)

Newlyweds Kenta and Emi have settled into a new home in a suburban apartment. As a newlywed couple, their love is burning bright. Suddenly, they hear a loud sneeze from the next room. The next morning, Emi, still bothered by what happened the previous night, goes to check on her neighbors, partly to introduce herself after moving in…