Bionis' 内部 (Carcass) (巨神胎内/骸, Inside the Giant / Carcass) is a Field Track in 异度神剑, composed and arranged by Manami Kiyota. It is track 20 of disc 4 from the 异度神剑 Original Soundtrack. This music is heard when the party enters the Bionis' 内部 for the first time, connecting from Satorl Marsh to Makna Forest. This theme will play in that area up until the events at the Mechonis Core.
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