Macross Frontier Episode 17 English Subbed Episode Title:Goodbye, Sister.Episode Description:Ozma promises Ranka that he will attend her first live concert on Macross Frontier, but he is ordered to defend the fleet from another Vajra attack before that. During the battle, Brera reveals that the Vajra are constantly evolving and that the information related to the damage that one unit receives is instantly shared and stored by the whole race and used as feedback during the creation of new units. This makes the use of the same type of attack on them useless over time. Ranka's singing appears to be the only way to stop the Vajra from attacking.