Yeah, I didn't have to reacquaint myself with my meal! (I watched this episode on an empty stomach.
)
Spoiler:
Cosmic reset!
What a way to go! No "down the road" for Rika!
So Mion knew about Keiichi's talking to Oishi because she subs at Angel Mort where they had their conversation
or Shion called her up and let her know (Lil' sis watching big sis' back.)
I still can't believe that they don't talk to each other or see each other much. They work in the same town and Mion had an exact copy of part of Shion's wardrobe. That could mean that Shion does drop by from time to time or that Mion is jealous of Shion and copies her secretly. But Shion's comments that Mion has enemies is worrisome. Maybe that's why she's packing a pistol.
Poor Keiichi. Must be tough being the object of affection of twins!
Also...