DESCRIPTION:
Title: 深海ノ光 (Light of the Abyss)
Circle： Yonder Voice
Album： 砕夢 (Broken Dream)
Vocals: 瑶山百霊 (Yoohimemiya)
Lyrics：蒼羅杏 (Sora Anzu)
Arrangement： 戦場ヶ原妖精 (Senjougahara Yousei), himmel
Original: 艦これ 春イベント2015 EOボスBGM (KanColle Spring Event 2015 EO Boss BGM)
Release Date： Aug 14, 2015 (Comiket 88)
Art: 紅衣きつね, 砂利犬, 么敖毛
Horrible English Translations: Yours truly

Buy the album: http://yondervoice.net/?p=3015
Like the artists:
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http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49116994
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