KanjiJLPT N1
Pleasure

pleasure, happy, rejoice

Mnemonic

A lonely spirit floats up to the man on the moon, who hasn't spoken to anyone in centuries. The moment they meet, the man on the moon bursts with pleasure—laughing, spinning in zero gravity, his spirit ablaze with pure delight at finally having company.
Additional thoughts
Picture a glowing ghost drifting through space to reach a lonely figure sitting in a crater. His overwhelming joy at the visitor—leaping and twirling weightlessly—captures the essence of genuine pleasure. Left side: spirit radical. Right side: man on the moon component.
Quick recall
A spirit visits the man on the moon, who bursts with pleasure at finally having company.

Details

The keyword for 愉 is pleasure. This kanji conveys a sense of joy, delight, and pleasant satisfaction. It refers to the feeling of being in good spirits and experiencing genuine enjoyment or contentment. The character is commonly associated with a lighthearted, cheerful state of mind that arises from agreeable circumstances or experiences.
On'yomi
Kun'yomi
たの.しい、たの.しむ