This is Pretty Serious Ichi Hanami:
serious collector of old polishes) - but I have no idea what this might be based on - something 90s, maybe? Anyway, this is sold out on PS's website right now but hopefully might be restocked at some point!
I usually go into pink-and-berry overdrive for the first half of February so this would be a good one. Who knows if I'll get around to it, though. (I think my new Femme Fatale polish may be up next.)
Added: here's the post I wrote when I bought this polish, which includes Kaz's description for the Museum of Naileontology collection. Also note that this was in my 2015 favorites.