He is interested in heraldry and is researching his family's coat of arms.

He has a deep interest in heraldry.

He went to the library to investigate the incident.

He is very interested in science.

My family tree has a long history.

His family's crest tells the story of ancient history.

My younger brother will enter elementary school next year.

He saves a small amount of money every day.

My younger sister is currently attending elementary school.

He was able to go to university by getting a scholarship.