The Little Busters’ outing went off peacefully, and now that the summer holidays have started, most baseball team members have gone home. Among the few still around are Riki Naoe and Kudryavka “Kud” Noumi. However, Masato has caused quite a bit of damage to the boys’ dormitory by hitting it awkwardly with a baseball, so it is now underwater. A new place to stay is needed, so the boys are unceremoniously put up with the girls. However, not everyone will be able to enjoy the luxury of a bed.

The film adapts and expands the Planetarian visual novel by Key. The story is set in a dystopian future where biological and nuclear warfare has left a once prosperous civilization in complete ruin. The film tells the story of an old man travelling around with a mobile planetarium projector to show people the stars.

The new OVA will feature the prequel short story "Snow Globe," which debuted as part of a light novel volume that bundled with a limited-edition version of the original PC game.

Visual Tour's 20th Anniversary release on Blu-ray from live held at Yokohama Arena in July 2012. Features Utatsuki Kaori, Karuta, Mami Kawada, Ayaka Kitazawa, Eiko Shimamiya, LiSA, C.G mix, Rita, Chata, NanosizeMir, Maria, Eufonius, Larval Stage Planning, Lia etc.

A national concert tour featuring LiSA titled "Girls Dead Monster starring LiSA Tour 2010: Keep The Angel Beats!" was held across Japan August 3 and September 2, 2010; all of the venues ultimately sold out. A BD/DVD video album box set titled Girls Dead Monster starring LiSA Tour 2010 Final: Keep The Angel Beats! of the tour's final performance was released on June 1, 2011 by Key Sounds Label bearing the catalog numbers KSLV-0001–0003. The last concert of Girls Dead Monster was held on December 27, 2010 at an event called "Girls Dead Monster Last Live: Final Operation" featuring Marina and LiSA at the Tokyo International Forum.