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Tear Jerker: Grief Syndrome
Mami'sDowner Ending if she's the only surviving magical girl. She sits all alone, in a dark room with tea and snacks prepared for everybody except they're all dead.
Kyoko also gets a downer ending if she's the only magical girl that died. Unlike Mami's ending, however, everyone else goes on about their lives while Kyoko sits in a dark room eating an apple in all her loneliness.