The Blank Year, Part Two Meitantei Conan : Season 1 Episode 1031

Conan and Kogoro conduct an investigation in Koneru in order to find the lost memories of Esaka Ritsuo, who lived in the area for the past year. In Koneru, he's reunited with the people he spent time with, and he nearly regains his memories when he's barked at by a dog. Two days later, Conan and Kogoro head to Esaka's home with high hopes, where they learn he's been found dead.