Devsister knows event Tower of Sweet Chaos will be hard with f2p player, cause the Searing Keys recharge is too long even with Labs research-level max, so they gave free 20 keys every day in 13h16 GMT+9, I guess, 20 keys = 20 hours, (18 hours if max labs). So f2p can reach at least Tray 91!2yr ⋅ Baoanhle2207 ⋅ r/CookieRunKingdoms
