Written and illustrated by Makoto Tateno

Manami's math teacher thinks she is falling behind in her grades because of her dedication to the CHAOS card game. He threatens to tell her mother - unless she can beat him in a match! Later, a seemingly unbeatable player who actually hates CHAOS is gunning for Manami. Then the unthinkable happens: Manami loses her Sahgan card. Can she go on playing without her most powerful card?