This event started on 04/15/12.
Last event (Sumika One-off Release 04/12) – Next event (Mado Coordinate Model Release 04/12)
Last Sumika event (Sumika One-off Release 04/12) – Next Sumika event (Sumika One-off Release 05/12)
Last Sumika anniversary (Hiroshima Sumika Renewal 1st Anniversary) – Next Sumika anniversary (Hiroshima Sumika Renewal 2nd Anniversary)