He is always thinking pessimistically.

He is always pessimistic about the future.

The low official faithfully executed the emperor's orders.

The dirigible flies quietly through the sky.

The workers went on strike demanding a wage increase.

He tends to view things from a pessimistic perspective.

The bird is flying in the sky.

Masahiko is my best friend.

Kazuhiko is my best friend.

Ryuhiko is my best friend.