Những bài hát của ca sỹ "Ken Hirai"
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Ookina Furudokei
Ken Hirai
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Precious Junk
Ken Hirai
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Life Is...-Another Story-
Ken Hirai
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Candy
Ken Hirai
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Hanabira
Ken Hirai
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Ex-Girlfriend
Ken Hirai
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Ex-Girlfriend
Ken Hirai
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Sweet Pillow
Ken Hirai
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Hug
Ken Hirai
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まばたき (Mabataki)
Ken Hirai
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フルサ・サイーダ (Furusa Saida)
Ken Hirai
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Cry&Smile!!
Ken Hirai
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Tug Of War
Ken Hirai
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思いがかさなるその前に.../ Omoi ga Kasanaru Sono Mae ni... (Before these Memories Pile Up...)
Ken Hirai
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Wonderful World
Ken Hirai
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Gaining Through Losing
Ken Hirai
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Strawberry Sex
Ken Hirai
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Taiyou (太陽)
Ken Hirai
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Ring
Ken Hirai
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Kyoi no Bonsai
Ken Hirai
