Hmm... stupid plot bunny suddenly gave birth to awkward thought. Since Amaterasu makes references to beasts and the beasts are only born when the blazblue and a murakumo it creates somehow... "fuse". It would be awkward if Dan had a blazblue like Ichika and he creates Ran's murakumo.
if anyone is confused by how "fusing" would be awkward. I would be happy to show you exactly how murakumo unit 13 continuously approaches a wielder of the blazblue