His grandfather was an officer in the Japanese Army.

My grandmother drinks Panax ginseng tea every day.

He participated in the Olympics as a pentathlon athlete.

Pentathlon is a competition that tests both physical strength and technique.

There are many introduced species of plants living in this park.

She went to the dermatologist to remove the milium.

This is my favorite hiryūshu.

The history of the Empire of Japan is very interesting.

The Empire of Japan, written as 大日本帝國 in Kyūjitai, was a nation that existed from 1868 to 1945.

The Imperial Japanese Army was a Japanese military force that existed from the Meiji era to the Showa era.