Loved Yakuza 0, loved the estate mini-game, love idle games, so your entry seemed like a slam dunk for me, and I do like it! Fairly simply number go up that feels good to buy stuff in! I do think that money being every 15 real life minutes is just kind of excessive, but its a quick and dirty implementation so I don't blame you for going with that on a time crunch!
I think with some extra work, this could be a really fun short idler I'd throw the usual couple of dollars at!