This is absolutely amazing and really solidly designed! This resembles a game with a lot more polish and work done in just a week, so well done!
The core gameplay loop of digging into the dungeon to get takoyaki ingredients that improves your stats is really solid, and it has a really well designed difficulty curve that pushes the player to encourage further exploration for more ingredients. The presentation of the graphics and the icons are clean and really suit the style and gameplay, and the sound feedback on using the takoyaki stand, attacking enemies and taking damage are well integrated. The feedback for damaging enemies and even a progress bar to show how close an enemy is to attacking you is a really really nice touch and shows real care and attention to the player experience! :D The enemies in game are really cutesty and unique to the design and setting, this is a really unique concept that definitely has promise to be worked on and polished into something that a lot of people would really enjoy playing! For a game done in a *week*, the polish here is bonkers and overall, it's a really solid experience! The save system is a really really nice touch too, I'll definitely be exploring the depths for more ingredients ^^
*Random bug I spotted, you can cheese certain items if you have multiple of a same 'type' for a slot, which can let you infinitely +1 items by clicking on another item in your inventory (tbh, it's not even really a problem, the gameplay is fun enough that cheesing it like this is deincentivised).