My hobby is keeping saltwater fish.

He bought new swimming trunks.

I am majoring in anatomy at university.

This area is still undeveloped and rich in nature.

This area is still undeveloped, and nature is abundant.

We often go to conveyor belt sushi on weekends.

He often takes things out of context, leading people to misunderstand.

He chose to discard the shadow for the substance.

For the sake of friendship, he chose to cut off his own interests and take righteousness.

Please tell me the outline of this book.