If there was a forum for machiko, it would be in japanese...[/QUOTE]
Yeah, unfortunately I have found that to be the case, A few sites out there, but navigating them is next to impossible as I don't speak Japanese. Was it you who first mooted the idea of a Miss Machiko fan club here? If so, count me in!
As for the relative "sexiness" of the different episodes, my main interest is old fashioned "cheesecake", ie inadvertant exposure of women, skirtblowing, etc, so for me personally sexual undercurrents (ie Tentako and Machiko naked together) isn't really necessary, except of course for her embarrassment. The Wikipedia entry about the strip clarifies that you are right - she's just too NICE to get the kids into trouble when they grope her.
What is it about schoolteachers that makes 'em so sexy? Ann Berrybush, Jessica Truth, Machiko Mai - and my own poor imitation, Kathlyn Corley - I'm sure some psychologist could explain it.