Because Kone signed the contract with a knife, Joe only went to the United States to recuperate because he was injured with a knife, so he was asked to help him train temporarily. When knife elder brother came back last year, it was natural that Kone would return to Wingstar. Well, it can only be said that Kone was fostered in other people's homes a few years ago, although the bridge did not treat them as outsiders. It's more like grandpa's house, because that knife was signed to the jstars.