Episode 6 ending is done by ALI PROJECT (Title unknown). Well... Seriously, all of you should have seen it coming from a mile away. I know I did. Faylan where?
Maegatari for episode 6 is up on the website, Yoshimasa Hosoya, Rina Hidaka and Michiko Neya (Maniwa Kyouken's VA)
Michiko Neya-san sounds a lot like Tsuruga Meisai's Atsuko Yuya. That "older woman" vibe with nearly same intonations... Although her performance as Kyouken will perhaps be as far from her real voice as was Atsuko Yuya-san's.
According to
Aki Hata's blog, third ending title is supposed to be "Senbon Sennyo no Hamari Uta". Thanks goes to the person who alerted me via ANN.