Thx guys.
I also got another song from the same singer that I'm not sure if it's okay to sing by a guy or not. Here is the lyrics:
流れる雲よりもはやく(フルVersion)
artist: 松下奈緒 & 清水原小学校6年2組 (Matsushita Nao & Shimizubara shougakkou rokunen nikumi)
album/single: 流れる雲よりもはやく
release: 2008.2.27
nagareru kumo yori mo hayaku
bokura kawatte yuku kedo
wasurenai kimi to aruita eien no ano keshiki wo
hajimete himitsu wo hanashita kaerimichi wo oboeteru yo
tooku no umi ni shizundeku yuuhi ga nijindeta
kataku kokoro tojita ano hi no boku ni
hitoribocchi jyanai koto kimi ga oshiete kureta n da
nagareru kumo yori mo hayaku bokura kawatte yuku kedo
wasurenai kimi no namida wo sashidashite kureta ryoute wo
onaji sora no shita dokoka de kimi mo makezu ni iru koto
kono mune ni dakishime nagara ashita wo sagashite yuku yo
itami kakusu koto bakari jouzu ni natta ima demo
honto ni kurushii yoru ni wa omoidashiteru
mukoukishi mezashite oyogitsuzuketa
miageta sora ni atarashii taiyou ga kagayaiteta koto wo
nani hitotsu mottenai kedo nani mo kamo ga soko ni atta
ano natsu wo bokura ikiteta doko made mo tada massugu ni
donna mirai ga mattete mo donna yume ni mayou toki mo
iroasenai omoidetachi ga kono senaka oshite kureru yo
nagareru kumo yori mo hayaku bokura kawatte yuku kedo
wasurenai kimi to aruita eien no ano keshiki wo
Here is the japanese lyrics (with true japanese words)
http://www.kashinavi.com/song_view.html?27222