This is a Japanese (or English) language manga (comic) or a magazine featuring multiple manga series.
Shonen Ace is a monthly publication that features lots of manga chapters of various ongoing titles. This month's manga chapters with opening color are Baka to Test to Shoukanjuu, Battle Spirits, and Ratman. Among the black-and-white manga chapters are Macross F, Neon Genesis Evangelion, Keroro Gunsou, Fate/stay night, Guyver, Petit Eva, Anikoi, and more. Includes a Sora no Otoshimono special radio CD (Japanese audio). All text is in Japanese.