Watch anime online, stream anime episodes online for free.Watch Negima! Episode 16 English version online and free episodes. Anime Episode guide, Chapter Negima! Episode 16 English dubbed Yesterday’s foe is today’s friend. Good enough friends to have fights. No doesn’t always mean no. An argument between Asuna and Ayaka results in competition in a series of challenges. However, when a Dark Seed magic appears, Ayaka recalls her friendship with Asuna and uses her Armor form to rescue her.