ニヤニヤ

ニヤニヤ

"ニヤニヤ" means "grinning or smirking in a sly or persistent manner."

Here, "ニヤニヤ" represents a sly or mischievous smile, indicating the character's mood or intent.

彼は何か企んでいるようにニヤニヤしていた。

He was smirking as if planning something.

In this context, "ニヤニヤ" is used to describe an amused or entertained expression caused by laughter or humor.

友達の冗談を聞いて彼女はニヤニヤしていた。

She grinned while hearing her friend's joke.

Here, "ニヤニヤ" metaphorically describes the playful and mischievous look on the cat's face.

その猫は遊びながらニヤニヤしているように見えた。

That cat seemed to be grinning mischievously while playing.