Happy Around! decides to challenge rap following Rinku's idea, 
However, Rinku and Muni becomes estranged due to misunderstanding.
Seeing Maho and Rei worried, Airi steps in to give them advice.
we wrote letters to each other.
راسلنا بعضنا
schrieben wir uns Briefe.
nosotras nos carteábamos.
nos enviábamos cartas.
हम एक-दूसरे को पत्र लिखते थे।
ci scrivevamo delle lettere.
nós escrevíamos cartas uma para a outra.
мы писали друг другу письма.