It's supposedly a collab between warurin1015 (the poster) in the audio department, cl234 on the video editing, and this "-32℃" guy for the main illustration. I can't find anything about the "-32℃" person, genuinely can't find any social media for him

Andrecnuuy said in comment #2581988:

... and this "-32℃" guy for the main illustration. I can't find anything about the "-32℃" person, genuinely can't find any social media for him

-32℃ is sannso5482. Tag added.

deepbooru said in comment #2588138:

-32℃ is sannso5482. Tag added.

thank you for that, idk why I didn't think of just searching -32℃ in artist search page