After Aichi tells his friends at Card Capital about how his school's student council is causing problems for the Cardfight Club, he repeatedly requests for Misaki to join as the fifth member. However, she still turns him down, having mixed feelings on the matter and being insulted by Kourin for not being serious on becoming a member. Then, to quickly shut down of the Cardfight Club, the student council creates a deadline for all potential clubs with at least five members to report to the council, or else they will not be officially recognized by the school. At the last second, Misaki declares herself as the Cardfight Club's fifth member after resolving her feelings of earnestly wanting to join the club. As an initiation test and to prove herself to Kourin, Misaki cardfights Aichi.
With her new Genesis deck, Misaki uses the Limit Break abilities of both Eternal Goddess, Iwanagahime and Battle Deity of the Night, Artemis to eventually defeat Aichi and becomes a proper member of the Cardfight Club. However, when Aichi and his friends go to the student council to gain official status, the council denies them because the club does not have a faculty advisor. Nonetheless, the student council president proposes another method for the club to be recognized: produce results by winning against other high schools' cardfighting teams. Aichi agrees to the terms, and so the president arranges for the Cardfight Club's first opposing team, which has familiar-looking members...
