Spoilers Follow:
Theme: I don't know if I'm seeing it. The conceit seems to be more about concealing information and the obfuscation of intrigue.
Story: There's not enough here yet, is the frank answer. What's here currently is amusing, albeit it feels like it may have been spread a bit too widely for anticipation of the future scope, with the branching choices potentially influencing further matters to come.
The premise reminds me of the old internet shit-post where it's a reality tv show but "15 gay men enter... but one is secretly straight???" except they're all straight and playing gay chicken the whole time to win the money.
It's interesting to see the first elim sans the other contestants. It feels like you're utilizing the limitations of your assets by batching them, in part.
I did enjoy your characterization of the contestants. Really carved out the archetypes reality tv loves.
Presentation: I appreciate you having the sound indicators. I thought it was an interesting stylistic choice to only have music when the show was filming, albeit I don't know if I felt like there should still have been music elsewhere, and just have had the show only had one theme song instead throughout to signify that it was to represent that? Maybe if the work went longer I'd notice the silence more.
I liked how you used NVL mode to kinda infodump/note background information. It made it feel kind of like the reality tv show where you get the name & role moments.
Also appreciate your title screen animatic.
Creativity: Murder on a reality tv show where the bachelor(ette) has their gender obscured. Curious enough! Always a fun premise. Also always funny to have an early opt-out ending.
Overall Thoughts: I thing the main thing is what others have already noted-- there wasn't enough of a narrative yet. The premise has promise, but there's not enough to latch onto, and it kind of zooms quickly into the game show (and we learn things that the protag ostensibly already knows after they already know them). The pacing might be a bit askew, but hard to say without more.
I did want to continue further though, so that's a good sign :p.
Best of luck on your further work with this!