Who is the main character?

He worked hard without giving up.

He owns a vast tract of land in Hokkaido.

He is playing the character on the side.

He is a very kind character in the village.

Lead is a heavy metal.

The protagonist of this novel is a character who unlocks the lock of the key.

The character of the pot is cute.

My key is a very important character.

I can hear the sound of a bell.