This release was on 10/17/10.
Last event (Tenshi Descend Fall 2010) – Next event (Standard Release 10/10)
Last Sumika event (Akihabara Workshop) – Next Sumika event (Sumika One-off Release 11/10)
Last Sumika one-off release (Sumika One-off Release 09/10) – Next Sumika one-off release (Sumika One-off Release 11/10)