I guess I am the only who was quite disappointed by this episode. Maybe I was in too cynical mood when I watched it.
Hanyuu just decides to quit being just a spectator and takes a human form without much explanation. Why didn't she do that earlier? She remembered Takano being the culprit which has never happened before - way too convenient. Irie tells Rika about the contigency plan to exterminate Hinamizawa's population just like that. Mion is suddenly Sherlock Holmes and figures out the faction rivalry in the Tokyo group. Akasaka happens to return to Hinamizawa in time for the final showdown. Everyone "remembers' Hanyuu. Too many coincidences and convenient plot developments for my taste.
Hanyuu is way too moe-cute. I can't take her seriously at all.
And last but not least, too little screentime for Suigintou again.