The retro Mega Man style was a very creative approach for this game, especially this type of game! The music and graphics are nice. I would be curious about some way to help Yuuka scale up faster with active play in the earlier game, although it's not vital for an idle-type game.

As for other ideas, there is definitely plenty of room in this formula! It's not a necessity by any means, but if the game was to be larger, the Mega Man formula led me to imagine that perhaps Yuuka could have different weapon types, or more idling defenders such as Wriggle. Conveyors to help the bees gather the inevitably overflowing bolts could improve collection.

Lastly, a way to save progress would likely be helpful. Idle games tend to be rather drawn out, so allowing players to return where they left off would let them use their time more efficiently.

Otherwise, as the others mentioned, it's a good take on "scale"!

Really nice, addicting tycoon/idle(?) game. I do think giving Yuuka a way of dishing out more damage would make dealing with the increasing health of the fairies would make progression feel a bit more satisfying. Eventually, you hit a point where so many of them spawn and become tanky to the point that you just get overpowered (lol). But other than this, I found the game very charming and I think a game like this has lots of potential.

Here's an idea.

Add levels, on every level set a different character in the house, each one requiring more bolts and offering you help every time and every level set more pots so you can learn progressively how to farm better.

Also Yuuka needs attack improvements, it's silly to think cirno overpowers her, nitori could offer to build more ladders at high price since everything disappear offscreen.

Loved the art ngl.

This was cute and I really loved the concept! Tycoon games are fun for me and it was a really great use of the 'Scale' theme. Choice of characters was also really nice to see and I adore seeing Yamame and Wriggle in the same game. 

I agree with another comment saying that the generation of the flowers felt slow- I think it's fine to have them be slow at first, but upgrading them didn't really feel like an exponential increase the same way tycoon games are kind of balanced around. I didn't feel that big of a difference  when I did. 

Really cute game but I feel like the generation speed of the flowers is way too slow with how exponentially expensive the  upgrades get. I think the second and third levels of the flowers should've been faster. Bees should also bee able to pick up more than a single bolt, or atleast have that be an upgrade. Some visual indicators on what level each flower is wouldve been nice too.

This is propaganda for Big Sunflower.

Nice little game, I think making a tycoon game as part of the theme of scale makes perfect sense.

It's very cute! I love it!