The chemistry between the two sailors is much more fun than almost anything else the manga brought up so far(except the flavored well between their legs of course).
That last panel was effing great. Girls bullying each other, acid used for acid attacks get lost and all he thinks about is "More work for me". GTO has nothing on this guy. Well, maybe the virgin part. And the girls underwear part.
The way of drawing Amako's face changes a lot during this chapter. From round, kid-like face to angular man-like face to grown-up face to holy maiden-like face.