He is a pure utilitarian, all his actions are based on the pursuit of profit.

I often fish in the river on weekends.

He likes to take a walk in the park at dusk.

He predicted the result of the competition using the tortoise and hare algorithm.

When opinions were divided at the meeting, a decision was made by the president's authoritative word.

He was able to gain a large profit from a small investment, it was like catching a sea bream with a foot ruler.

Aito won a prize in an essay contest.

When you pull this vine, a secret door opens.

He obtained the legendary Ten-hands Longsword.

The sword is a major character in this story.