Additional Memory (chapter)

Additional Memory (アディショナルメモリー Adishonaru Memorī) is an extra chapter of the Kagerou Daze manga included in the thirteenth volume. It is the second chapter with the title Additional Memory (55. Additional Memory), but is the only collected chapter without a number

Summary
The chapter shows Ayano viewing the many timelines as Shintaro's eye ability. It ends with Shintaro entering the classroom she's in.