闇への間隙

On these albums

Mana-Khemia Original Soundtrack中河健 & 阿知波大輔 · 2007Soundtrack

ガスト20周年記念CDボックスVarious Artists · 2015Soundtrack

Source: MusicBrainz recording 74a2cbd7-a694-4106-b47c-3156aafc9135 (CC0).