Enjoyable game.

There is some hit detection and physics jank in the way. Thankfully they're not major things. Say, why is the action key away from the partner switch key? Why 'J' & 'P' instead of having the keys next to eachother like 'J' & 'K'? It's kind of an awkward configuration.

That aside, the read was quite pleasant, and the gameplay & concept is good! (without the aforementioned jank in the way) The art is well made too for a 3-day work. Though I wish the plant switches that Kaguya must activate stood out more.

I covered this game in my Touhou Game Jam showcase here!
https://youtu.be/PoWrHcmGjbU?t=10722

WOW!  Pretty art, good gameplay, and some really well-written dialogue!

A neat platformer with a fantastic story. I like how you guys designed the character switching mechanic and how the levels are designed towards that. One thing I would comment is that I wish the key for switching characters could be more ergonomic, maybe the right click. This helps with quickly switching characters, without needing to move the hand across the keyboard.

Overall this is a fantastic game, truly underrated.

A fine story about some drunktards, the unlikely couple that need to work together to reach home, and it works so nice until gameplay hits in, not saying it was bad, but the art and story was nice enough to get me interested, and suddenly I see this ugly background that definitely doesn't fit with the music and characters, it surely needs to be polished, but as I said, its merely subjective.
Both character switch and attacks could be more pretty, but for a Jam game, is still very nice.

However, I found some weird bugs that probably were fixed in the post jam, but I'll address them anyway xD.
There's a weird wall jump when you touch an edge, it just pushes you in a random direction, there's also this weird thing that happens when switching characters very fast, you can literally go through the floor, I almost reached the exit from the beginning xD

Still, I had a great time, it's not a disaster, its quite fun and the story rewards you quite well xD

The art is super cute, the music has the kind of beat I like and the terumoko manzai like interaction is funny and warm. Gameplay kind of similar to VVVVV which I like too. I like this a lot!

funny little gremlin immortals hunched over doing outer space crimes. not sure what exactly they did that is a crime but there must be something there

collision and controls are a bit wack but the dialogue and puzzles are cool and i especially liked vvvvvving with kaguya

Genuinely one of the funnest entries I've played so far in terms of gameplay. Switching characters was a cool idea executed well, and I liked how the mechanic kept building (door to growing plants to better jumping to gravity switching). The music was also really good. I hope more people check this entry out.

This one has a lot of charm, it reminds me of Little Ideology from Jam 4 with the funny interactions between two iconically paired characters, player switching mechanics and a neat storyline. The concept and art are nice, and that background track is groovy as well, so the biggest flaw for this is probably polishing; the physics feel strange, grammar has some issues, and there's a handful of other bugs that make it feel a bit janky overall at times.

Now I happen to enjoy the goofy writing alot. Most of the dialogue felt in character for sure, except the starting dialogue (stuff about neets and all this just feels like a fandom insert joke)  It was fun seeing the two bounce off each other and it gave me more investment into the game.  
This is one thing you should most certainly take forward with regarding this game if you ever expand upon it in future.

Gameplay wise, not gonna lie, it was rough. The concept is interesting, sure, but it was incredibly buggy and inconsistent.  The platforming bugged out regarding gravity many many times (Gravity kept it's velocity as you turned, and you'd sometimes instantly accelerate right into a pit, as well as the platforms which were incredibly hard to consistently activate. 
And Mokou being the only one to attack felt like a wasted opportunity. I would of liked if say, Kaguya could slow enemies down. Would of been cool. Same with Mokou not really being used to say, set stuff on fire for a puzzle. Could of been cool.
I did like the gravity mechanic on a conceptual level, as well as switching between Mokou and Kaguya on the fly being needed. It's just the idea needed more fleshing out.

Visuals, I enjoyed how you depicted both their characters in extremely stylized ways. It made it entertaining to see and I would like to see other characters interpreted one day as well. Because it's a fun art style 
The backgrounds are average though. Maybe make them pick up to the same standard of exaggeration and style as the characters if you every come back to this idea.

Music's alright. 
Overall, I enjoyed it. Mostly for the writing and the concept, but regardless it was fun. I say grab the idea and refine it, I'd like to see what happens if you make a small but polished game out of this. Because this game was damn endearing.

I wish you luck in future.

(Also I was apart of the Game jam too with DanmakuDragon, if you want to give your own feedback you're totally welcome to :D  https://itch.io/jam/touhou-jam-6/rate/912501)