The first chapter kind of wanders, and the chapter length (2 volumes and ongoing) does seem to make this the longest Shuninta work we've seen to date. I totally love her work though, so I will be looking forward to it.
In terms of foreshadowing/long-term relationship development, what we've seen so far does heavily hint that the main character's attentions will be focused on Sacchan. I wouldn't count that relationship out just yet, despite the fact that she has a boyfriend.
The detailed thought and explanation which went into the english titling gives me a lot of hope for the quality of this series. I have high expectations for this work. Looking forward to future chapters, and tons of thanks to Kawaii scans for bringing more Amano Shuninta to us.