TV
Selesai tayang
10 episode
Ousama Ranking: Yuuki no Takarabako
Ranking of Kings: The Treasure Chest of Courage · 王様ランキング 勇気の宝箱
Sinopsis
"A treasure chest of unspoken courage is opened."
The special is described as a collection of shorts, showing past instances of courage and personal growth by the cast of Ousama Ranking.
(Source: Ranking of Kings Wiki)