【Cage of Abyss/深渊囚笼】
Chapter I/第一章：Ending Time Octet/八重终结
—官方原声带OST列表—
OST-001：The Wonderful Reverse [绝妙逆转] V3
OST-003 Phase 1：Timeline Intersection [时间交点] V2
OST-005 Phase 1.5：But They'll Refuse [但其将拒] V2
OST-006 Phase 2：Bloodily Sinking [血潭深陷] V2
OST-007：No Cheating [禁止作弊] V2
OST-008 Phase 3-Killer：Boomeranged [自食其果] V1
OST-009 Phase 3-COTV：Void Echoes [虚空回响] V2
OST-010 Phase 3-UKB：Karma Source [因果渊源] V2
OST-011 Phase 3-Murder：The Red Rain [血雨腥风] V3
OST-012 Phase 3-ULB：The Genocide Ends [穷屠末戮] V2
OST-013 Phase 3-AGEM：Fistoflatning [火石光电] V1
OST-014 Phase 3-Insanity：Insanity Increases [疯狂加剧] V2
OST-015 Phase 3-OG：Road to Ruin [不归路] V2
OST-016 Phase 3.5：Embers Reignite [渺焰回燃] V2
OST-017 Phase 4：Inferno Combusts [狱火焚天] V2
OST-018 Phase 4.5：Finish Striking Back [终结反击] V1
OST-019 Phase 5：Collapsed Determination [决心崩坍] V1
OST-020：Faraway Beauty [缥缈之美] V1