Note: Many of my comments are written post-jam, reflecting what I saw during voting. Pardon the slow follow-up! ^.^;
This was a delightfully silly concept that I enjoyed giving a try! The bullet hell, line-up-with-target, and need for secrecy all get combined well here. As I write this, I think about one of those WarioWare game modes where 9-Volt must finish his game in bed before getting spotted awake by 5-Volt.
The visual style is incredibly distinct! Okina is my personal favorite character drawn, thanks to all of the silly expressions. My favorite one of thoseis the diabolical laugh, but there are so many good contenders. The music is also remixed in a fun way!
I didn't quite understand how to not lose for some time. The condition felt like it happened randomly (sometimes just when Okina doesn't telegraph a stare, sometimes on timer even when dancing, sometimes NOT on timer because dancing). I eventually picked up what Satono's white bar is for and understood better - although even then, it took a lot of stamina to stay unnoticed (and some luck to time dancing adequately and not get two stares in a row @.@).
Otherwise, the game handles its components quite well, and makes for a cool short game! Excellent work!