Shy has grown a little after the battle against the "Amarariruku" led by the mysterious boy Stigma. When she returns to Japan, she meets Tennouji Ai, a girl from a village of ninjas who ran away from her home. She tells Shy that she left her village to chase after a member of the "Amarariruku." Amidst all this, an incident occurs in which Tokyo is suddenly enveloped in a black sphere and vanishes. The heroes are dispatched to rescue Tokyo—

Source: Muse Asia

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Prequel: Shy