Nihonjūdan 2600-Kilo (馬のゴン太の背にゆられ やったぜ!日本縦断2600キロ, I Was Shaken on the Back of Gonta the Horse 2,600 Kilometers Across Japan!)

Aitsu ni Koishite was released theatrically on May 30, 1987 as part of Pocari Sweat's Movie Caravan campaign.

To prove the superiority of Hokkaido horses, Kinzō Matsumae proposes a 2,600 kilometer horseback journey across Japan.

After crossing the Tsugaru Strait, Shotarō nearly freezes to death on Mount Hakkōda, but Gonta manages to carry him to a nearby inn.

After meeting up with Chisato in Tokyo, Shotarō and Gonta continue their journey southbound, enduring different challenges in Honshu.