Ko
(
コ
)
tsu
(
ツ
)
Ko
(
コ
)
tsu
(
ツ
)
App Store
Google Play
Vocabulary
N5
Day 2
なぜ
New
なぜ
なぜ
何故
why
adverb
native Japanese
Lv.1
Again
1
Hard
2
Good
3
Easy
4
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Space flip · 1–4 grade · ← → move
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