Number: 99

surely

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5 strokes
(heart) + (one/line radical)

ONYOMI: HITSU

必 is basically "heart" plus a line crossing it.
He's crossing his heart and swearing to surely never do HITS of acid again.

DESCRIPTION: -

KUNYOMI:

かなら*ず
always, certainly
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JUKUGO:
必要 ( ひつよう な)
super important
(surely) + (important) = 必要 (super important)
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必死 ( ひっし に)
desperately, as if one's life depended on it.
(surely) + (death) = 必死 (desperately, as if one's life depended on it.)
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USED IN: