He is knowledgeable about human affairs.

Choosing a leader for the new project is very important.

In medical classes, we learn about the structure of the human body.

Every year on January 7th, we celebrate Nanakusa no Sekku, also known as Jinjitsu.

He is suffering from inflammation of the renal pelvis.

The scent of the winter daphne is spreading throughout the garden.

He couldn't recognize the character.

Shouji is my best friend.

Do you understand the necessity of this project?

That information is unnecessary.