Well, I don't regret reading the series, but it is a case where some fanfic would provide a better ending, or even second half.
Last chapter: "We want to live together"
This chapter: time skip to "I haven't seen her in a year because university", time skip again to "I'm an office lady, probably living with her somehow"
Okay, that might be a happy ending?
At least we got to see Kuroe and Miyabi again.
One for the "flawed gem" pile, as in "nice premise and setup, fizzled execution". Like Citrus.