Following the booklet, this is Bismarck's image song.
"Beloved Silhouette"
Original：次発装填、再突入！ (Next Round Loaded, Re-engage!)
「艦隊これくしょん～艦これ～, Boss 5-4 theme」
Vocals：小峠 舞 (Mai Kotoge)
Lyrics：天音未優
Arrangement：あとぐる (Atoguru)
Circle：C-CLAYS | http://cclays.blog.fc2.com/blog-entry-300.html
Album：焔ノ旗 ～ホムラノハタ～ | Comiket 87
Illustration：イプー | http://www.pixiv.net/member_illust.php?mode=medium&illust_id=49572455
I don't own anything in the video, including the audio and picture. The credits go to the respective owners. This video is purely fan-made and will not be used for profit or illegal sharing!