No more sequels? aww :( well it was fun while it lasted (That's what she said, I had to do it) maybe instead of blackmail it's another hot girl in her class that always wanted to be an exhibitionist but didn't have the nerve to do it until seeing and following the class president. So she left the class president those photos and maybe another note is in the locker asking to meet on the roof of the school (classic place) because there is an important question I need answered.
The class president doesn't know who this is but goes to the roof running with ideas about what the question could be but the most obvious one is why she does this, after going to the roof the class president see's another girl and before saying anything the unknown girl talks to her like an enthusiastic fan girl meeting her favorite celebrity for the first time, explaining that she herself wants to do what she does but never had the nerve to and so settled to just watching and learning but now it's not enough because the new girl wants to experience it also which is why she left the photos in the presidents locker as a sign of trust that she only wants to learn and join her on the fun.
Each girl takes turns of being the lookout/voyeur while the other does the exhibitionism and sometimes they do it together including sex of course.
I especially love this one because I love seeing a girl in thigh highs, if she really wanted to be a dog then get some matching shoulder length gloves (that highlights her breasts very nicely) and a collar, of course various sex toys can be involved like the egg vibrator where the wire is in her thigh highs etc. sorry about the monologue with an idea, I just really enjoyed the story alot and hope that the ideas give you a reason to continue and no black mail is involved. Even if that doesn't keep the story going, then I really appreciate the awesome story because it's that good and the amazing artwork :)
@anthrofan That's definitely a better outcome than blackmail. Also, not sure it this was clear or not. I didn't write or draw these. I just translated them. I don't know if the original artist has any plans for this series. Thanks for the comment.