Nanami in the Society of Light

Explanation: During season 2 when the Sartorius / Saio was slowly making other students become members of The Society of Light, Manjoume challenged Nanami to a duel, and she lost, becoming a member of the Society of Light as a result.
She was later freed when she lost a duel against Judai.
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Nanami Yamabuki / Natalie Redstone © DreamsandPassion 
Yu-Gi-Oh! GX © Kazuki Takahashi}