Six Gravity (AKA Gravi) and Procellarum (AKA Procella) both belong to Tsukino Talent Production (AKA Tsukipro).

Gravi continues to expand their range of activity as Tsukipro's top group and sets their sights on the joint concert Full Moon Festival 2020 as their next goal. Kakeru Shiwasu and Kisaragi Koi are tasked with recording comments from the group's members hyping up the event.

Choosing "a new me" as their theme, the two boys enthusiastically search for filming locations and set up a schedule for their comment video recording tour, but will it end without incident...?!
I thought a boat this big would be okay.
ظننتُ أنّ سفينة بهذه الضخامة ستكون مناسبة
Ich hätte nicht gedacht, dass ein
so großes Schiff schaukeln würde …
Esto no es nada
para un barco tan grande.
Esto no es nada
para un barco tan grande.
Ça devrait pourtant aller,
sur un bateau pareil…
Pensavo che una nave così grande
non avrebbe avuto problemi.
Achei que não teria problema
com um barco grande.
Я думал, на таком лайнере
мы волн и не заметим.