The way her hair bloobers stay strictly to the front is pretty impressive.
I had to to review the last several pages, but it looks like you're right that they consistently remain in front. I was starting to wonder if MIO5 fastens them to her collar somehow ...
Bloobers ... Yes, that is a good word for them. Bloobers.
I think in Danbooru terms, they are probably drill sidelocks, though they are rarely rendered clearly enough to really see the curliness at the ends as more than blobs.
Nee-chan forgot her phone.I'm going to go to the bathroom.Huh? What about going to the bathroom?We can just contact her on her cell phone later.It went away.More importantly, Hige-san...Ok, me too.She got me.But Wakabayashi-kun...Let's go ride that.