One of the new October anime "Otome Yōkai Zakuro"
According to ann.com:
"ED #1: "Hatsukoi wa Zakuro-iro (初戀は柘榴色)" by Mai Nakahara and Takahiro Sakurai"
other ED themes seem to be:
looking forward to these...
edit: oh and-- and OnoD's singing the OP for Shinrei Tantei Yakumo - Key (*_____*)