Hirai Ken (平井堅) - Kimi wa Tomodachi ~キミはともだち~ -ENCORE-

Hirai Ken (平井堅) - Kimi wa Tomodachi ~キミはともだち~ (Live)

Hirai Ken (平井堅) - Kimi Wa Tomodachi ~キミはともだち~ (Less Main Vocal)

Hirai Ken (平井堅) - ƒKimi wa Tomodachi ~鍵穴~

Hirai Ken (平井堅) - Kimi wa Tomodachi (Soul Source Production Mix)

Hirai Ken (平井堅) - Kimi wa Su・Te・Ki♥

Hirai Ken (平井堅) - Aishiteru

Hirai Ken (平井堅) - Open

Hirai Ken (平井堅) - Affair

Hirai Ken (平井堅) - Miracles

Hirai Ken (平井堅) - CANDY

Hirai Ken (平井堅) - Elegy

Hirai Ken (平井堅) - Canvas

Hirai Ken (平井堅) - Ring

Hirai Ken (平井堅) - Jealousy

Hirai Ken (平井堅) - REVOLVER

Hirai Ken (平井堅) - Signal

Hirai Ken (平井堅) - L'amant

Hirai Ken (平井堅) - Sentimental

Hirai Ken (平井堅) - Style

Hirai Ken (平井堅) - Negative

Hirai Ken (平井堅) - Intermission

Hirai Ken (平井堅) - Stage

Hirai Ken (平井堅) - Nostalgia

Hirai Ken (平井堅) - Rakuen

Hirai Ken (平井堅) - Kiss

Hirai Ken (平井堅) - Close

Hirai Ken (平井堅) - BLIND

Hirai Ken (平井堅) - Memories

Hirai Ken (平井堅) - Why?

Hirai Ken (平井堅) - Yokogao