Just finished reading the first 6 chapters, has some promise and had a few funny moments, definitely watching this and following the manga in the mean time. Arun seems interesting and Tena hasn't managed to rub me the wrong way yet, the music studios have provided some good laughs every times they showed up towards the end lol.
Looking at the staff it should be a good adaption, Sunrise are generally a good studio and are good at adaptions (KuroKami aside), Yoko Kanno being on board should provide some really nice music throughout, expecting to hear piano pieces a lot... The two scriptwriters worked together on K-ON! HANADA recently did series composition for Regios and Sora Kake Girl and YOSHIDA is doing Umi Monogatari this summer and worked on the ARIA shows. With the source material being sound my only worry is that in the directors chair is the guy who directed KuroKami
