"Masked bitcH" is an electronic song by Giga-P, sung by GUMI, from the perspective of a girl who is willfully in a temporary relationship with a man she is not interested in. The song's PV emulates a rhythm game, in the style on Pop'n Music. During the "song selection" menu at the beginning of the video, the names "Streamline Prism" and "Tetrodotoxin Synthesizer No. 2" can be seen; these are two of Giga-P's earlier works.