Comrades in (Cosplay) Arms Aria recalls that after Valkyrie Battle was cancelled, her father, Yo, never managed to write another manga and became depressed. Aria's mother was forced to divorce Yo and the last time Aria spoke to him, she told him she hated him. Now, Aria wants to become popular cosplaying as Melia so her father will see that someone still loves his manga. Lilysa decides to get Aria ready to cosplay as Ariel in time for Summer Comiket, the largest event of the year. Lilysa also invites Mikari to cosplay as Miriella. Mikari agrees as she has spent months convincing her agency to let her cosplay, all to impress Okumura...