The dual number does not exist in English grammar.

My zodiac sign is Gemini.

My favorite Sosei features beautiful depictions of daffodils and ume flowers.

This twin crystal has a very unusual shape.

The shape of this dipyramid is very unique.

This bicone shape is mathematically very interesting.

My mobile phone broke.

Kai is a kanji that is not often used these days.

He took up the holy sword and fought against the forces of darkness.

The Grasscutting Longsword is one of the sacred treasures that appear in Japanese mythology.