Wow, I just noticed this series for the first time and I'm loving it. Gives me Their Story vibes with the college age and fun but realistic take. Following their life together feels refreshing, it always saddens me when stories just end the moment they agree to date (since that's where the fun actually begins!!).
I'm fine with how the oneshot ends, but this fleshes out both Miwa and Saeko a lot more, they're already showing development (ie. Saeko opening up to telling others about them without degrading herself and Miwa realizing her dream type might just be fantasy).