Movie was uploaded with the creator’s permission.
Source file download link: http://www.l-room.net/product/movie/madness-udongein.html
Mirror link: https://safebooru.donmai.us/posts/91177
‣ Alternative title: Stops at the affected area and immediately dissolves ~ Lunatic Udongein
‣ Original title: 患部で止まってすぐ溶ける ～ 狂気の優曇華院
‣ Album: 東方月燈籠 (Touhou Moon Lantern)
‣ Album release date: 2006-12-31 (Comiket 71)
‣ Circle: IOSYS
‣ Animation: Locker Room Production (Kagi)
‣ Movie release date: 2006-12-23
‣ Arrangement: ARM
‣ Lyrics: Hakase, 夕野ヨシミ
‣ Vocals: miko
‣ Voices: miko, quim, しゃちょう
‣ Source music: 狂気の瞳 ～ Invisible Full Moon
‣ From: 東方永夜抄 ～ Imperishable Night
‣ Original composer: ZUN
English translation provided by MacFan2006 on IOSYS’s official video, and on Touhou Wiki: en.touhouwiki.net/wiki/Lyrics:_患部で止まってすぐ溶ける_～_狂気の優曇華院
You can find translation notes and reference explanations there.
This is part of a project to modernise, restore, and preserve many old Touhou doujin flash animations as Flash player is losing web browser support by 2021.
MAG.MOE - The MAG, The MOE.