Man. I don't usually go for perverted protags but this guy is crazy enough for me to respect him.
And he's doing it with extreme effort without social suicide.
This guy is a lost cause.
He have forgotten the real reason why guys wanna peek girls.
It's not the panties, but what under the skirt.
He got a barebutt exposed in his face, and he disappointed because he didn't get to see her panties?
@Metroxylon
It comes from pantsu (panties/underpants). Since in German you pronounce the "Z" as a "ts", Panzer sounds like pants-er.
So that became a Japanese slang (パンツァー) for a true pantsu connoisseur.