Okurigana is an important element in understanding how to write in Japanese.

He was tormented by a deep sense of loneliness.

He became a person with no living relatives, harboring a deep sense of loneliness in his heart.

He died a lonely death.

He was afraid of dying alone.

She is planning a date with her current boyfriend.

He lost everything.

My boyfriend gave me a gift.

Everyone was surprised by the news.

I am planning to attend my friend's funeral tomorrow.