Once again, both the top and bottom screens are a collection of different sprites and resources from the game. I take (almost) everything from TSR (thanks to all the people who ripped the sprites I used for this theme! more detailed credits down below). The color palette of the buttons is based on the colors of the Japanese logo of the game.
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Credits:

Yoshi and baby Mario sprites by: Jermungandr. 1-1 level by: Barack Obama and Murphmario. Chocolate Mountains background by: Barack Obama and JigglyPuffgirl. Flower garden (layer 3) foreground by: Murphmario. Intro backgrounds by: MarioFanGamer.
Sound effects by: Raccoon Sam and Yingchun Soul.
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More things:

-This theme has custom sfx (from the game, taken from The Sounds Resource).

-The bottom screen is animated, it's nothing impressive at all but I made it (except for the star, that's from the game).

-The game logo is the international version but i cut out the "SMW2" and painted the rest of the logo with the colors of the japanese version because I like it a little bit more like that :)).

-The cart icon was also made by me.

Athletic BGM (SMW2:YI) - Koji Kondo