Please help me identify a Japanese song :(

I'm new to a forum and so this might by any chance be in the wrong category, I'm not confident though but here i go.

https://www.youtube.com/watch?v=3-fmT26hjzc

The song I am looking for starts at 0:00 ends at 4:22. I have searched the lyrics by doing a classic listening but it still didn't work out, but I think it's also because I am a really new person to the Japanese language listening. Also I couldn't hear the lyrics properly because of the sound effects from the game the uploader was playing.

All I ask though is if someone recognizes this song's title or artist if possible since the lyrics I couldn't find them well and I LOVE this song.

Help is much appreciated!!!

It’s track No. 9 named “Diamond Dust” from the album “幻想★あ･ら･もーど” (2012) by SOUND HOLIC.
https://www.youtube.com/watch?v=dfW4gSB1U7U

Lyrics:
http://blog.livedoor.jp/eland4771/ar...058086141.html

Thanks a lot.
Also, is there by any chance to find the second song that is played on the video? I heard another part of it somewhere on a radio and it also got my attention but there was no name listed (I'm not sure if it's from SOUND HOLIC, either). At least that is if you can do it by finding the lyrics and then the song because you seem to be a better listener than me.

And fact, I never noticed it was located under the SOUND HOLIC songs. ^^;