Platinum by Mio (Yuuki Aoi)

From: The World God Only Knows Character Cover Album
Platinum by Mio Aoyama

Another fitting song. The mangaka really thought this one through! (The songs were chosen by the mangaka-- Wakaki Tamiki, himself). A rich girl turned poor singing Platinum? pshaw.
If you do not know song, you should be ashamed of yourself. It's the third opening of Cardcaptor Sakura. The most well-known magical girl anime in all history.
A fun fact: Mio is voiced by Yuuki Aoi, who also voiced the titular Madoka from Puella Magi Madoka Magica, which is also a very famous magical girl show. So it's even MORE fitting for Yuuki Aoi to sing this song.
Image by VonCx-Wolf of pixiv
--
Lyrics:

I'M A DREAMER hisomu POWER
watashi no sekai
yume to koi to fuan de dekiteru
demo souzou mo shinai mono kakureteru hazu

sora ni mukau kigi no you ni anata o
massugu mitsumeteru

mitsuketai naa kanaetai naa
shinjiru sore dake de
koerarenai mono wa nai
utau you ni kiseki no you ni
omoi ga subete o kaete yuku yo
kitto kitto odoroku kurai

I'M A DREAMER hisomu POWER
mada minu sekai
soko de nani ga matte ite mo
moshi mo risou to chigatte mo osore wa shinai

toritachi wa kaze ni nori tabi o shite yuku
kyou kara ashita e to

tsutaetai naa sakebitai naa
kono yo ni hitotsu dake no sonzai de aru watashi
inoru you ni hoshi no you ni
chiisa na hikari dakedo itsuka wa
motto motto tsuyoku naritai

genkai no nai kanousei ga koko ni aru kono te ni
IT'S GONNA BE YOUR WORLD

mitsuketai naa kanaetai naa
shinjiru sore dake de
koerarenai mono wa nai

utau you ni kiseki no you ni
omoi ga subete o kaete yuku yo
kitto kitto odoroku kurai
--
English translation:

I'm a dreamer, a hidden power
My world
Is built with dreams, love, and anxiety
But things that I can't even imagine must be hiding there

Like trees that face the sky
I'm looking straight at you

I want to find it, I want to fulfill it
I believe, and just by that
There's nothing that I can't overcome
As if singing, like a miracle
"Thoughts" are changing everything
Surely, surely, enough so to surprise you

I'm a dreamer, a hidden power
In the world yet to be seen
Even if something is waiting there
Even if it's different from my ideals, I won't be afraid of it

The birds ride on the wind and go on a journey
From today into tomorrow

I want to tell you, I want to shout it
I'm an one and only existence in this world
As if praying, like a star
The light is small, but someday
It will become more and more stronger

A limitless potential is here, in my hands
It's gonna be your world

I want to find it, I want to fulfill it
I believe, and just by that
There's nothing that I can't overcome

As if singing, like a miracle
"Thoughts" are changing everything
Surely, surely, enough so to surprise you
--

DISCLAIMER: I do not own the song nor the image. Support the artist by buying the album