Kanda agonizes over the right cat tower for Fukumaru. Then, a lost dog shows up in Kanda's garden, and Sorako brings it inside?! A familiar face known online as "twinkle_bell" also intrigues a teenager who's stopped attending high school... Although Kanda and Fukumaru's simple life continues to change when Siam gets a new owner, the pair's bond grows deeper than ever.