Riku wa Yowakunai

リクはよわくない

Based on Sakagami's own life, the story follows the carefree daily lives of a 5-year-old and a puppy named Riku. In addition to the Italian greyhound Riku, the characters include the chihuahua Tsutomu, the miniature dachshund Yousuke, the French bulldog Maruchan, and the pug Paguzоou.