Looks like there is either a synonymous name or translated name of 'Firefly or Firefly Land' associated with this rose. The sources also state that it is a sport parent of the variety 'Mayfly' (aka Yangyan and Kagerou) which I grow and it is itself the sport of a rose called Kaori. My best guess is that the Kaori that it is sported from is Kaorikazari because the breeder, flower form, and strong scent are shared between the two.

Mayfly Source: tengbenyueji.com/shrubroses/3176.html
Firefly Source: tengbenyueji.com/shrubroses/2011.html
Kaori Source: tengbenyueji.com/shrubroses/1373.html