|Primera aparición||Fang volumen|
|Familiares||Madre de Shingo, German (mascota)|
Shingo Yaguchi (矢口しんご) es un personaje del manga Lassie.
Rol en Lassie
Shingo is the son of a poor family. He lost his father a year ago which has left him in sorrow and in need of confort. One day when he's one his way home from shopping, he meets a wounded collie. The dog saves him from some bullies who wanted to rob his money. He takes the collie home and finds out it's name is Lassie. Shingo's sorrow over the loss of his father makes him beleieve that Lassie is a gift sended from his father in heaven.
He becomes very fond of the dog, but the next day when he's out walking him, he rips lose and run away from him. Lassie's trying to save his friend German, but Shingo thinks he's running away for good. He calls his name and can't stop crying. After a few days, Lassie returns to him. He wants him to follow and Shingo does so. He finds a wounded German Shepherd (German), whom he takes care of. German become his new dog and gave Shingo the strength to say goodbye to Lassie.