こうか
effect, result
Mix in something with enough power behind it, wait, and the fruit of that is your stomach finally leaving you alone. The same kick こう as 効く, landed か: こうか.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.