...IS THAT IT?
Gah it's like the mangaka wanted to be bold, but lost it by the next chapter. Fine. Whatever. But the next arc better take advantage of being an adult in the "net generation" setting. I really can't see how the next case could do better than the original premise, but I'll give them the benefit of the doubt
EDIT: Okay, I had to take a look at the raws, cause I couldn't believe that that could just be it. I can't read, so I don't know what role the teacher actually plays, but it seems like it will be... okay. Just by illustrations alone, it seems like this will predominantly be about those kids and romance, and the teacher and Twitter are just kind of there. I would probably like it, if I wasn't more interested a story about an adult who also grew up with the internet helping kids with their internet life problems.