Day 3 - nothing so far.
They fixed the Pachinko machine. I don't think I spend coins or real cash considering how expensive it is compared to most Gachas in other Nutaku games where they give more in-game currency often while the Gacha takes a lot of in-game currency but not too much.
Flower Knight Girl = 50 Flower Gems
Aigis = 5 SC or 3 SC
Harem Heroes = 900 Koban
I don't know about other games