Niji means Rainbow in Japanese.
Rainbow appearing after the rain.
Rain means sadness then Rainbow means sadness will go away and the bright light will come.
The 1st time I heard this song is when I was in my high school time, this song was broadcasted in MUSIC STATION on ANIMAX channel, maybe because that time I was still young and have no idea about what it was trying to convey, did not have the internet also.
After graduating from Highschool and got into some University, I had more time and the Internet to search for Japanese music that I like and meeting some friends that I could share anything to them, in a depressing time, I heard this song again and finding the English translation of this song, I cried.
Daijoubu dayo miagereba mou
Daijoubu hora nanairo no hashi
Yatto onaji sora no shita de waraeru ne
I cried like a child.
I wish I could have someone telling me that.
I wish I could hear that from someone dear to me.
In the end, me right now, I thought I am from back then was so silly.
I have a family loving me more than everything, they are the one holding me and soothing me when I had trouble with my world.
However, after a long time no listening to this song, this song still have the same effect to me, it makes me think stronger and keep calm to face my own problems.