>>282171901
Magic ketchup is 魔法のケチャップ (mahō no kechappu) in Japanese. The bottle's text was written in English in the original panel as well (resembles a Heinz one pretty closely). The CM on the stomach appears to just mean "commercial" as Renge referred to it as "ウニライスCM" with the Furigana シーエム for the last part. So, just sea urchin commercial.