B:The Beginning - Ike Yoshihiro is an album by Ost, released in 2021. The album is a Bonus Track(s) anime 2-CD.

• 1-1 Split-B
• 1-2 Havoc
• 1-3 Lily
• 1-4 Prickle
• 1-5 Dreamy
• 1-6 Puzzle
• 1-7 Reason
• 1-8 Craziness
• 1-9 To Be Buried In Grief
• 1-10 Waiting There For You
• 1-11 Easygoing
• 1-12 An Indelible Sin
• 1-13 Scream
• 1-14 The Voice Of The Wind
• 1-15 Gusty
• 1-16 Chasing Ghosts
• 1-17 The Spirits Of The Dead
• 1-18 Honesty
• 1-19 Hide Away
• 1-20 Spiral Of Confusion
• 1-21 Suddenly A Voice Was Heard
• 1-22 Darkness
• 1-23 She Walked Around
• 1-24 Endless Nightmare
• 1-25 The Beginning Of Madness
• 1-26 Temple
• 1-27 Rendezvous
• 1-28 Remember Me
• 1-29 Memories
• 1-30 Winter I
• 2-1 Winter II
• 2-2 Burning Pain
• 2-3 Flame
• 2-4 Koku
• 2-5 Children's Elegy
• 2-6 Wake Up
• 2-7 When The Ceiling Speaks
• 2-8 After Him!
• 2-9 Diner
• 2-10 The Beginning
• 2-11 Shake
• 2-12 Reversal
• 2-13 Against Time
• 2-14 Psychological
• 2-15 Deporter
• 2-16 Take Revenge
• 2-17 Make Up For Lost Time
• 2-18 Answer
• 2-19 Eye
• 2-20 High Altitude
• 2-21 Bones In Agony
• 2-22 A Substitute
• 2-23 Blow
• 2-24 Unveiling The Last Truth
• 2-25 Unveiling The Last Truth
• 2-26 TCN