柠萌柚稚
[níng méng yòu zhì]
The character combination comes from the names/words representing lemon ('柠', symbolizing sourness/youth), mango bud (萌, symbolizing sprouting/new beginnings or cuteness), grapefruit/pomelo ('柚', representing uniqueness/freshness), and naive ('稚'), which together imply an overall youthful innocence or freshness.