Hah! I was wondering about the two of them being long-lost childhood friends since the first chapter, and it looks like I was right! I'll bet that it was something to do with Lily that caused Marika to be obsessed with being "normal".
While I also assumed that Yuri!Lily was childhood friends with Yuri!Marika thanks to her very short flashback panel in the first few chapters (I think chapter 3?), this chapter actually opens up a new possibility as you say.
It could be that Yuri!Lily is actually childhood friends with Normal!Marika dun dun dun
Something about experiments to create gates between worlds. The two either accidentally got mixed up in it and met in that place for a short time or they were purposely used for an experiment and then got their memories wiped.
And perhaps Yuri!Lily then met Yuri!Marika, who of course wasn't like her counterpart and Lily's weird questions/stories made her aware of this entire world jumping thing in the first place.
...or I'm completely wrong.
last edited at Jun 14, 2019 3:19PM