In the Blu-ray Box Complete Edition of Top wo Nerae 2! Diebuster, there are extra features titled "omake," which bear resemblance to the Gunbuster! Science Lesson. These mini clips star Nono, Lal`C Melk Mark, and Dix-Neuf as they teach scientific ideas relevant to the show. The omake are around three minutes in length and showcase chibi renditions of the characters.