what does KUON mean. Is it a word in another language?

- KUON is a Japanese word written in Romanji style and it means Eternity.
Romanji is a Japanese writing system in which words are written using the Roman alphabet. It can be used to write Japanese for foreigners and/or to write directly foreign words in a Japanese text. The other Japanese writing system are Hiragana, Katakana and Kanji and I'll just stop there before you'll have a headache