Author Hotaru Yuyami has just tragically lost his beloved dog. While gazing at a tree in his yard, he notices a strange pink mushroom, and it’s…moving?! The mushroom suddenly turns into an adorable dog, and Hotaru decides to take it in. Now, alongside his editor and a mushroom researcher, Hotaru shares heartwarming and hilarious moments with his new capricious companion.

[Source: Crunchyroll]