Hina's storyline has 2 possible outcome.
You either beat her twice, she leaves, and you can then befriend her friend in Noblesse Oblige at night, or you lose to her at least once to unlock another bad ending, also in Noblesse Oblige at night.
The progress is slow and steady, just like it was on this one. Plenty of plans for it(and other projects) that are still in motion.