Những bài hát của ca sỹ "Ken Hirai"
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Aoi Tori
Ken Hirai
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Interlude - Brighten Up -
Ken Hirai
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orthodox
Ken Hirai
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Iwanai Kankei
Ken Hirai
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Omoigakasanarusonomaeni
Ken Hirai
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Stay With Me (Original Karaoke)
Ken Hirai
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Girls Girls Girls
Ken Hirai
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Emmm...
Ken Hirai
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Seishun Days
Ken Hirai
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Yokogao (Original Karaoke)
Ken Hirai
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Ladynapper
Ken Hirai
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Taboo (A Tip Of M-Flo Remix)
Ken Hirai
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Memories
Ken Hirai
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Bokunokokorowo Tsukutteyo
Ken Hirai
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Katahouzutsu No Earphone (Original Karaoke)
Ken Hirai
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Precious Junk (Original Karaoke)
Ken Hirai
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Doshaburi (Original Karaoke)
Ken Hirai
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Life Is... Another Story
Ken Hirai
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Kimiwa Tomodachi
Ken Hirai
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Nonfiction
Ken Hirai
