The so-called 'Original Ten', the first ten teams of the Japanese J1 League, are set to regroup after a 21-year hiatus, according to a Japanese news headline. The J1 League, Japan's top professional league for association football clubs, was started in 1992 with these ten teams. The news suggests a significant development in Japan's sports sphere.

Soccer is a popular sport in Japan, with the J1 League being one of the most followed sports leagues in the country. The 'Original Ten' holds a special place in fans' hearts as they were the pioneers of the league. The regrouping of these teams likely stirs a sense of nostalgia and excitement among Japanese sports fans.

This can be compared to when original teams or clubs in the US or EU, such as the Original Six of the NHL, hold a reunion or regroup. These types of events typically generate a considerable amount of excitement and interest among sports fans given the history and legacy these original teams carry.