Originally Posted by madmac
"Arcs" in Hayate are very loosely organized things, with tons of filler, asides, and plot threads strewn throughout. I really suggest you read the whole thing because the smallest things from the least serious chapters can end up becoming important later on.
I'll second that. It might only be a single frame or a casual, seemingly throw away line, and it may take YEARS to pan out, but when it does, going back and rereading the series shows how much thought Hata-sensei puts into things.