A new school year has started and the Karuta club must get new members or face penalties.  

Discussing the goals of the club, Chihaya discovers the team is not as unified as she thought.
in adherence to the 31 syllables rule.
ateniéndose a la regla de 31 sílabas.
ateniéndose a la regla de las 31 sílabas.
de acordo com a regra das 31 sílabas.