The song Parasite by Hadouken! speaks about a one-sided relationship where one person is giving everything they have while the other person takes without any consideration or gratitude. The narrator realizes that they are being consumed by a parasite who is sapping their life and energy. The lyrics suggest that the narrator is done with the toxic relationship and won't fall for it anymore. They come to the realization that half of them is for themselves and the other half is for the parasite. However, they refuse to let the parasite take everything from them as they have in the past. The message of the song is one of self-realization and standing up for oneself in a relationship. The narrator recognizes that they have been consumed by a parasite but chooses to break free from it and take back control of their life. Overall, the song is a warning about relationships that are one-sided and toxic, urging listeners to take control and not allow themselves to be consumed by others. The energy and intensity of the music emphasize the urgency and importance of the message.