He is doing a specialized study in economics.

He is specially studying mathematics.

I found a Japanese clover flower in the park.

I started studying for the junior high school entrance exam for junior high school students.

He received a command from his boss and started a new project.

I will help you.

When spring comes, the east winds start to blow.

Kochi is my best friend.

After finishing the meal, he said 'goch'.

He visits his family's graveyard every Sunday.