From King's Raid Wiki
These costumes were made available for purchase in the Special Shop after the 22nd February 2018 patch and 8th March 2018 patch.
Purchasing these will give a Exp +2% and Gold +1% bonus effects.
|Special Shop||School Season, Beach Party, Trick or Treat, Super Star, Merry X-Mas, World Fair, Frozen Fantasy, Academic Flair, Wedding March, Summer Tide, Tender Embrace, Devoted Servant, Yuletide Carols, Witching Hour, Culture Ensemble, Lovers Blessing|
|Event Costumes||Darkness Costume, Sub Story, League of Honor|