The B★RS animation site announced that the 50-minute anime will be streamed for free June 25th through August 31st. It is unclear at this point if it’ll be Japan-only or not. This is all part of a big promo push during that time that starts with a free DVD extra as part of Hobby Japan magazine.
Also announced was two of the cast members. Playing the role of Mato is Kana Hanazawa (Potemayo, Cencoroll, To Love-Ru), and Yomi will be voiced by Miyuki Sawashiro (Rozen Maiden, Di Gi Charat, Galaxy Angel, Sayonara Zetsubou-Sensei).
Additional Souce: Anime News Network