Picked it up cause I can dig some HMOAF from time to time.
Now, like the bar, I am quite invested (in the characters). The models actually look pretty good, considering the kind we used to have in Illusion games (the horrors). Can't really say I have a favorite, but that is more cause I like them all rather than like one alot more than the others (Though, gun to my head, probably Katie or Sarah)
Speaking of the bar, much like the girls, it is getting bre(a)d, but after the first couple of upgrades, money stops meaning anything. The only thing to spend it on is upgrades for the bar or gifts for the girls, which by the time you have enough to spend on gifts, you don't really need them as hugging, hanging and kissing give more than enough points to get you all the scenes. Meanwhile in the beginning when those gifts would be useful, you don't have any money to spend (But it more a mater of convenience than necessity) .
What I am trying to say is that making the bar profitable is so important, I kinda want somethings to spend the money on: Maybe expanding the business and buy up the diner, aquarium and beach, but that just kicks the can down the road. Perhaps special scenes that require a hefty chunk of change to gain access to, like financing Grace's cosplay or experimenting with Alice and the smut she reads.
Ultimately, it is your game and I am just rambling about my experience with v.5.
(Also it is weird how this is the second review I wrote about how a hentai game can better handle running a bar.)