This is part of my collection, and I particularly like the dipyramid.

The shape of this dipyramid is very unique.

This shape is called a bicone.

This bicone shape is mathematically very interesting.

He was imprisoned as a political prisoner for political reasons.

This project is a total war for us.

He is known as the highest leader of the organization.

The Sōkeisen is a major event that gets very exciting every year.

He participated in the ceremonial music at the palace.

This year's fruit harvest has significantly decreased due to frost damage.