The image was uploaded to the pixiv at 7:07 (JST) on July 7.
The image size is 777x5948 as well, truly a big 7 out of 7
Geeeeez, Nagato-san! Geeeeez!!Ah... I can't reach...fwee-fwooooIt's Tanabata, Nagato-sanpeaceWhat are you talking about?W-Whirling tides?!TA-DAAHsproingYeahOoohhboingOkay, I'll help!It got popular with the kiddies.Tanaka KusaoDo this here, then that there...What is that?YeahPlease show Yukikaze how to make it too!You want to give the Destroyers a ride on this Grass Ark that you made?ga-skrfskrf