What is his courtesy name?

How do you read this character?

Do you know his age?

He was thought to be a weakling, but he was actually very brave.

He is weak, so he tends to get sick easily.

He was complaining that the exam was difficult.

I am the only one who knows his weakness.

What is his weak point?

People who are not well-informed find it difficult to use internet information appropriately.

He was emaciated after a long illness.