Keiichi attends Nekomi Institute of Technology and belongs to its Motor Club. One day, while dialing a number accidentally, he reached out to the Goddess Relief Office. Before comprehending what was happening, Belldandy appeared in his dorm room, granting him a wish. Initially skeptical that it's a prank from his sempais due to his bad luck with girls, Keiichi wished for someone like Belldandy as his constant companion. To his astonishment, the wish was granted. Since then, they have been together. Their relationship attracted considerable attention in both mortal and other realms. Despite appearing indecisive and shy when it comes to love, Keiichi proves himself trustworthy in matters of the heart.