|Date Released||April 17, 2012|
|Opening Song||Taiyou Iwaku Moeyo Chaos|
|Ending Song||Zutto Be with You|
Goodbye, Nyaruko (さようならニャル子さん Sayōnara Nyaruko-sa?) is the second episode of the Haiyore! Nyaruko-san anime series.
Nyaruko believes it's time to invade the headquarters of the culprit that operated a theme park. Arriving inside a black castle in the center of an arena they are approached by Nodens, the boss. However, they also confronted by someone from Nyaruko's past, Cthugha, her sworn rival. Fighting Cthugha in another dimension, surprisingly she reveals to have complex feelings for Mahiro which greatly annoys him. Nyaruko transforms her body in black armor thus returning back through a box she had given to Mahiro. Backing Nodens in a corner, he says that Mahiro was chosen to be part of a drama, having Mahiro command Nyaruko to have her punished. Nyaruko remains with Mahiro due to her infatuation for him.