I LOVEEEEEE THIS SONG SO MUCH. Genuinely one of my all time favorite songs. I have three recommendations (one you already know well).

four times around the sun by dustshells: 2min - A SAD ONE. A lot of the lyrics of peas talks about silence and love and the concept of not being able to follow your lover into their dreams... this fic is very much following your lover into their dream while the world falls apart around you (please mind the tags but a very spot on rec)

murmuration by daisier: minsung - you already know this one well but i think the lyrics and general vibe are very spot on (a lot about aching and dreaming and hnnghhgh it just fits so well).

time is (never time at all) by saru: minsung - parallel universes. general vibe but also You're still my baby, livin' in a cold, cold world like minsung together in all worlds even in the ones they're not necessarily together </3