Hiragana にゅ (nyu)
にゅ is a combination (yōon) sound, read “nyu”, written with 5 strokes.
にゅ
AI voice
Memory trick
Big に + small ゅ blend into one beat: "nyu".
In katakana
ニュthe same sound, “nyu”Practise にゅ until it sticks
It's taught in hiragana lesson 13, "Combos I". Nijikana drills each character with mini-games and audio, and spaced repetition brings it back just before you forget it.
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