Aiken Rosinante no Sainan ~ Mukai Ryuuta no Doubutsu Nikki(2001)

Aiken Rosinante no Sainan ~ Mukai Ryuuta no Doubutsu Nikki is a Japanese series that follows Rosinante, a devoted Labrador retriever who waits faithfully by the railway tracks after his master, a train conductor, passes away. When vet student Arata Mukai adopts the loyal dog, his life spirals into chaos—he's evicted from his apartment and forced to move into the university girls' dormitory. Told entirely from Rosinante's perspective through diary entries, the show chronicles life at a university veterinary clinic where the kindhearted but clumsy Arata struggles to balance his natural gift with animals against his difficulty connecting with people. As Rosinante observes the daily mishaps and heartwarming moments unfolding around him, the series explores themes of loyalty, belonging, and the bonds we forge across species.