Forbidden Scrollery.
This is the beardlib ver,for those who can't use customost.

including 4 arranges of "Bibliophile with a Deciphering Eye" from FS CD.
2 of them have vocal.
(i didn't pay any attention to edit the stealth part,so don't play stealth when you are using this mod-or you can,your choice.)

CustomOST ver:https://modworkshop.net/mod/32849
Preview:https://www.bilibili.com/video/BV1B5411T76a (1st track) (DW no down no AI...no comment?)

Cover PID:60684927 by ryosios

- .-. .- -.-. -.- .-.. .. … -=Tracklist
1(VOCAL)
Stealth:権太夫 - 邦楽合奏の為の「判読眼のビブロフィリア」
Loud:709sec. - アカシビト
2(VOCAL)
Stealth:いちごパプリカ - 判読眼のビブロフィリア
Control:梶迫小道具店 - booze hoarding
Loud:めらみぽっぷ - 幻想少女物語
3
Stealth:荒御霊 - Suzurine (AR10 Edit)
Loud:nmk - SUZUNARI,CODE (Instrumental)
4
Stealth:風鈴ぼるけいの - 夢のつづき
Loud:Glassy：oceaN - Eyes

I'm too lazy to copy my description.
More information in CustomOST ver.'s description.