AIR GEAR: Kuro no Hane to Nemuri no Mori - Break on the Sky

エア・ギア 黒の羽と眠りの森 -Break on the Sky-

First episode is based on the 16th volume of the manga. Features Ikki vs. Ringo.

Second episode is based on the 23rd/24th volume of the manga. Features Kogarasumaru vs. Sleeping Forest inside Inorganic Net.

(Source: MAL)