[活動]好友邀請箱子 IV

- Description: 給邀請20名好友的冒險家發放的箱子。 - 開啟箱子可獲得[倉庫管理女僕]佩爾莉琪阿拉、[活動]夏卡魯的珍貴箱子2個。

- Additional use requirements are not yet decoded; this is not a complete eligibility check.