I just looked up the Heian No Kaori - it does look a bit like it but I'm pretty sure I've never had seeds for that one. The color in #1 is more saturated too - I've tagged the plant and will keep an eye on subsequent blooms. It will be interesting to see if the next one have a definitive patterning to it like the Platy/Fuji F1 in the above picture.
The Platycodon Blue X Fujishibori cross is proving to be interesting the F2's looked very different and had an interesting age morph (don't know what else to call it) - that second picture is of the same flower but about 5 hours old. I'll be definitely growing out some of the F3's next year.