According to the light novel, Hyouka episode 6-7 (Volume 4: The doll that took a detour - Little birds can remember) was happening AFTER episode 8-10 (Volume 2: The credit roll of the fool - Why didn’t she ask EBA?)
So forget that empress, my OTP is safe right? RIGHT?
On a side note, Hyouka fandom in ff.net REALLY needs a lot more love. If you can’t stand Irisu with Houtarou and can do nothing about that, write some HoutaEru fics or else just go there and read mine.. -_-
If Houtarou ends up with Irisu after all the teasing we got for Eru, I will smash my face through the monitor and hang myself with my connection cords.