Actually, it's my choice to make that (parody) cover of that song due to Steven and Yumemi shares some major similarities: Both are final bosses, their hair and eye color scheme might be a color negative of each other, and both are seen wearing capes (albeit Steven only explicitly seen wearing a cape in Adventures), both have backgrounds of being affiliated with some form of science (in Steven's case, his father is running an archaeologist institute). Plus they even have generic surnames and given names (at least Yumemi's name is contains the part "Yume" that is found in a popular given name (at least for anime / manga characters), Yumeko)

Should I make a cover in that way?

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