Kuroishi Hitomi - Strange Girl (Code Geass Original Soundtrack)

Standard Tuning

Main riff (0:55)

The first note starts off the beat

G----------------------------------|
D--------------------6--6--8-------|
A----6~--4--6--X--6----------------|
E----------------------------------|

Chorus (1:43)

G-------------------------------------------------------------------------|
D--------------------------------4------------------------------4-6-8-6-4-|
A--2~--X-2-2---2-4-4~--2-4-X-4h6---6-4-6-6~-X-6-6~-X-6~-4-6-X-6-----------|
E------------4------------------------------------------------------------|

G----4--------------------------------------------------------------------|
D--------------------------------------------------4-4-6-6~-X-6-6--6-4----|
A--2---X-2-2-----X-4~--2-4-------4-----6-6~-X-6-6~---------------------4~-|
E--------------------------X-2h4---4-2------------------------------------|

Then repeat the main riff

Also, listen out for the bit where the instruments stop. Apart from that you just play 
the main riff until the end.

I'm not 100% on this one but it should at least be 90% correct.