YUI portrayed Kaoru Amane in the movie Taiyou no Uta and Erika Sawajiri played the role in the drama series with the same name. This is Erika’s song for the drama series.

Erika Sawajiri ~ Taiyou no Uta

Erika Sawajiri ~ Taiyou no Uta

28MB 5:11 H.264/AVC 480×272 PSP Ready

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Credit: source video Blya@jpopsuki

I haven’t seen the drama series, but I liked the movie a lot.