Won’t Betray You Again (もう二度と裏切らない, mou nido to uragiranai)
TOUHOU PARTYBOX 02 (東方PARTYBOX02) by Melonbooks Records – Track 7, disc 1
Released: 2016-08-13 (Comiket 90)
Riverside Parade – Track 6
Re-released 2019-5-5, Reitaisai 16 (previously on 東方PARTYBOX 2 by Melonbooks Records)
Arrangement: Comp (コンプ)
Vocals & lyrics: Ranko (ランコ)
Based on The Traditional Old Man and the Stylish Girl (時代親父とハイカラ少女) from Touhou Seirensen – Undefined Fantastic Object (東方星蓮船 ～ Undefined Fantastic Object.).
Love this song ever since I heard it in the TOUHOU PARTYBOX 02 sample. I remember guessing which track this was based on, as they didn’t write it on the website and it wasn’t really clear from the sample.
Lyrics transcript and romaji can be found at Tiramisu Cowboy.