There is how many letters in hiragana

Which 5 letters in both (hiragana & katakana) that can have 2 more sounds

If you’re American , what language you can use it for your name in Japan

Choose katakana tsu

Choose hiragana shi

Do the “he” wrote in katakana & hiragana the same

There is ha in hiragana

There is Fu in both(hiragana & katakana)

where is katakana se