Akari, with her renewed determination, Shiori, whose heart won't stop racing, and Jiro, who is unable to find his answer... Since their summer job at the beach, their feelings have only intensified. Then, one day, Jiro runs into Shiori at a bookstore...
Double rainbows bring happiness.
.قوس قزح المزدوج يجلب السعادة
Los arcoíris dobles traen la felicidad.
Los arcoíris dobles traen la felicidad.
Un double arc-en-ciel,
ça porte chance, non ?
Dicono che un doppio arcobaleno
 porti fortuna e felicità.
Arco-íris duplos trazem felicidade.
Двойная радуга приносит счастье.