The first ending theme of the series has a lot of surrealist imagery. In particular when they show Fuurota's title screen, there's a picture of a man's face in the background, presumably one of the staff members on the show.
Both ending themes have individual title cards for each character, in which they present the characters in action. This is a callback to the unit director, Norimitsu Suzuki's, other work. Notably his work on the ending themes of UN-GO, Soul Eater, and Fullmetal Alchemist from studio Bones, which feature similar traits.