I think I
blue blew a fuse upon seeing this art on Pixiv. It reminded me of the original Bakemonogatari opening, where everyone’s favourite tsundere walked larger-than-life through the streets. Only this time, with fighter jets and equally-large flying saucers.
Safebooru taggers claim they’re F-22 jets, though the make of the UFOs remain a mystery. I know far more about civilian than military aviation, so I defer to their expertise.
As for the motivation behind this inexplicable art series, Google Translate claims the artist merely wanted to draw giant girls, and the ensuing ridiculousness. Mission accomplished.