Shippo no Koi

Salaryman Ryou Inukai dreams of leaving his high-stress job and finding a career that gives him enough free time to care for a dog of his own. Until that becomes possible, he relieves stress by visiting a pet store and spending time with puppies and his favorite clerk, Teruaki Hoshi. These visits give him the motivation to make his dream a reality, eventually adopting a puppy he calls Wataame.

With Wataame waiting for him at home, Inukai's days are more pleasant than ever. Still, he stays in touch with Hoshi so he can share cute moments with the small dog. One day, the two meet in a park, where Hoshi shares that he was a dog in his past life, and he believes it was Inukai who saved him. Inukai questions this but does not stop Hoshi from paying back his debt the best way a former dog can: by ensuring that Wataame receives the best care possible—even if that means living in Inukai's home.