The song succeeds because it doesn't try too hard. It relies on: Shock Value : The bluntness of the hook grabs attention immediately. Phonetic Catchiness
: The art style emphasizes exaggerated physical features common in the genre, with a focus on "voluptuous" designs and specific aesthetic traits like beauty marks. Animation Quality gomu o tsukete to exclusive
Saki confronts him with the contract, physically tearing it up. She tells him that if they are to be "exclusive," it can’t be because of a signed document or a set of clinical rules. She challenges him to be with her without the safety net of his stipulations. The song succeeds because it doesn't try too hard