From Jasper, one of the popular MK Kollectors, shared some MK merch he recently got. Among them include a German magazine, Deadline, with a huge feature on the MK Movie. He also shares some postcards. I am trying to find this issue online and further evidence of the postcards. You can see the magazine in his story highlight. It does show a couple BTS photos including Reiko's face being painted.

https://www.instagram.com/p/CNNxBuVBzmI/?utm_source=ig_web_copy_link