Here is where you can collect any rewards you have received, including event rewards, login bonuses, compensation for maintenances, achievements, and promotional items.
This page is divided into three columns, reading from left to right: All (すべて), Bromides (ブロマイド), and Other (その他).
You can accept your rewards by pressing the pink button at the bottom right, which reads "Receive Page in Bulk." (ページ内一括受取)