Once you have mastered the basic kana, two subtleties make all the difference, both spoken and written: the small tsu and vowel lengthening. Misplaced, they can completely change the meaning of a word.

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🟩 1. The sokuon: the small tsu (っ / ッ)

The small tsu is a つ written smaller. It is not pronounced: it marks a double consonant, that is, a short pause before the following consonant.

Without っ	With っ
きて (kite, come)	きって (kitte, stamp)
かこ (kako, past)	かっこ (kakko, bracket)

👉 When speaking, hold a brief silence where the っ sits.

🟦 2. The chōonpu: long vowels

A lengthened vowel lasts about twice as long. This length also distinguishes words:

おばさん (obasan, aunt) ≠ おばあさん (obāsan, grandmother)

In hiragana

You add the matching vowel: お + う for the ō sound (とうきょう, Tōkyō), い after e, and so on.

In katakana

It is simpler: you use the ー mark.

コーヒー (kōhī, coffee), ラーメン (rāmen).

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🟧 3. Why it matters

Length and double consonants are distinctive in Japanese: ignoring them means risking one word for another. Your ear gets used to them quickly with a little listening and practice.

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🎯 Train your eye

Spot the っ and the ー in the words you read on Kanakana: in word reading, you will quickly see how frequent and useful these little marks are.