Youtube link - https://www.youtube.com/watch?v=oJobosWmFbI
Official website - http://www.asobism.co.jp/social/shirodora/collabo_berserk.html
iOs version - https://itunes.apple.com/jp/app/chengtodoragon/id953790507
Android version - https://play.google.com/store/apps/details?id=jp.co.asobism_castleanddragon
Official website - http://www.asobism.co.jp/social/shirodora/collabo_berserk.html
iOs version - https://itunes.apple.com/jp/app/chengtodoragon/id953790507
Android version - https://play.google.com/store/apps/details?id=jp.co.asobism_castleanddragon