He was hiding the fact that he was an illegitimate child.

It is thirty-three kilometers to my house.

Hiragana is one of the characters in Japanese.

I am studying Japanese katakana.

I forgot my username.

Man'yōgana is an ancient Japanese script that used Chinese characters as syllabic characters.

Binomial nomenclature plays an important role in biological taxonomy.

He was my student, but now he has become so proficient that it can be said 'the student has surpassed his teacher.'

Since he started his new job, he's been lively as if he were a fish back in water.

He absorbs new information like a sponge soaking up water.