“Sisters Royal: I’m Being Harrassed by 5 Sisters and It Sucks” is a 2D shoot’em up that was released for the Switch back in June 2018. Which will be released on a physical disc at the end of January 2020.
It is developed by Alfa System, who we know from Shikigami no Shiro. Cubed3.com has a nice little story about the game, where you also learn more about the mechanics.
In a way it is somewhat similar as Shikigami no Shiro; it is also a 5 level game, similar bonus multipliers, same diversity in characters properties. Main difference is the setting, where with Sisters Royale everybody is walking!
Checkout play-asia.com on current (pre-order) pricing.