Not sure if this has already been touched upon but I was drawing some volleyball cuties and needed some clubroom references for the background. I loaded up episode 5 to and came across this scene:

Perfect! Exactly what I needed.

An idol group poster? Wait a second…are those labels?

ENHANCE

From left to right:

Suga - Likes older women

Tanaka - Pervert

Ennoshita - M, likes tsunderes

Lolicon Narita

Short hair is life! - Kinoshita

Likes big boobs - Daichi

goodbye