According to steamspy the game has sold 3,656 units in steam.
#NintendoSwitch community is a blessing! #BlossomTales is now a turnaround story: Humble indie dev @castlepixel can stay in business and continue making games. Love y'all! 3 months #Switch revenues surpass #Steam lifetime revenues 20 times! pic.twitter.com/GxO88Zor12
(=^・ω・^=) Kuroneko S2 - Ore no Imouto - Steam, MyAnimeList and Twitter - PSN: Gustavo_Valim - Switch FC: 6390-8693-0129 (=^・ω・^=)