Ako Gishisai (赤穂義士祭) is the memorial festival of Chushingura at Sengakuji temple, Tokyo and Ako-City, Hyogo.
It's held in December 14 which is the day Chushingura happens.
Chushingura is one of the most favorite Samurai story since Edo period.
Today, it is still popular and many people visit here and pray for loyal Samurai.
Afternoon, there is the parade of Ako Roshi start from Zojoji temple and finish at Sengakuji in front of the grave of Asano Naganori just like the real story of Chushingura.
! For the details, please access to the followings;
[Seasonable Traditions & Japanese Culture] http://www.edo265.net/japan/
[Official Homepage of the Event] http://www.city.ako.lg.jp/kensetsu/kankou/visitor/gishi/index.html