I came across these lines in a song (0:59):
As far as I know, ともに means something like "together with," but "together with ten days" doesn't really make much sense.
There's also the less common meaning "both," but again, "both the 10th/ten days, and the die I cast, turned red" doesn't make much sense either.
Am I misinterpreting this? What's going on here?