Trying to recreate Aloha Sushi spicy spam musubi. Maybe a Fort St. Mall exclusive??

My friend was (still is, really) obsessed with the spicy spam musubis from Aloha Sushi on Fort Street Mall. Unfortunately the building remodeled and the store closed, and he's been trying to recreate the sauce ever since. He thought maybe the reddit sleuths might be able to help?

Some info:

• That location (1132 Bishop St.) was part Aloha Sushi, part convenience store, and he doesn't think the other locations have it.
• The owner of that location was a Korean lady
• He thinks that maaaybe Korean capsaicin sauce could have been one of the ingredients?
• He's tried to recreate it before, without success. See flavor and ingredient notes below:

https://preview.redd.it/nt16g5gap8vg1.png?width=680&format=png&auto=webp&s=e81d826dcf9494baf3d4a17a6fdddb06f3b78aa0

And here's a video (c. February 2020) for visual reference:

https://reddit.com/link/1slp6tf/video/9u282w2ep8vg1/player

And an empty wrapper with just the sauce on it (obviously he's obsessed with trying to figure this out):

https://preview.redd.it/t4c8xk1zp8vg1.jpg?width=576&format=pjpg&auto=webp&s=c2cf7ddc3e37deb3dd6f4f5b17f6fa20d1feb9fc

Thanks in advance for any suggestions!!!