I find it curious you increased the resolution but kept the limited color palette. I would experiment with the colors. The buns are supposed to be vibrant and delicious!
That's sort of my style. I limit the palettes for sprites that use them.
I increased the resolution to take advantage of the mobile's detailed screen, so it's pixel art but without being too blocky.
Mai's portrait was ripped from the cartridge decal.
Hekk yeah! Mai looks different but in a good way. You made her yours.
I see the chibi sprite of Mai being used in intermissions on the top half with the portrait on the bottom half.