Another idea from a friend of mine (I wiped out his name as he requested), I made it happen.

Require SuperBLT and Beardlib

Stealth Part:Famishin,Angel Note - 恋ひ恋ふ縁(Koto Version)
Loud Part:Famishin,KOTOKO - 恋ひ恋ふ縁

video(bilibili)

2 BGMs from Senren * Banka/千恋＊万花

How to Install: Put Famishin, KOTOKO - Koi Kou Enishi folder into mod_override folder. Simple.

Made by GrandHorse. DO NOT STEAL IT.