nikkori
A warm, genuine smile that lights up the face. More radiant and wholesome than a smirk or grin.
💡A child seeing their birthday cake — 'She smiled nikkori with pure delight.'
おばあちゃんがにっこりと微笑んだ。
Grandma smiled nikkori warmly.
The baby looked at me and smiled ___ for the first time.
赤ちゃんが初めて○○と笑ってくれた。