This book explains in detail about the use of foreign words.

When I looked into her eyes, the phrase 'the eyes are the window to the soul' came to mind.

When I look into her eyes, it's like I can see her heart. That's because the eyes are the window to the soul.

This kanji has the left 'heart' radical (立心偏).

Every morning, he has a habit of reciting the Heart Sutra.

This sentence contains kanji not approved for regular use.

Aishinka is my best friend.

He is working on the project wholeheartedly.

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

He started exercises to strengthen his abductors.