Wild Zero features a central romantic plotline where the protagonist, Ace, falls in love with Tobio, who is later revealed to be transgender. The film explicitly affirms their love, with a character stating that 'Love has no borders, no genders, no nationalities.' Tobio is portrayed with dignity and agency, and their relationship is celebrated without prejudice, resulting in a positive depiction of queer love.

Wild Zero features Tobio, a transsexual character depicted with dignity and agency as a heroic figure. The film explicitly affirms trans identity and love through a pivotal scene where Guitar Wolf declares that love transcends gender. Tobio's relationship with the protagonist, Ace, is ultimately accepted and celebrated, presenting a net positive portrayal.

The film strongly endorses progressive family values by celebrating a chosen family unit (the band) over biological ties and normalizing a non-traditional romantic partnership, while traditional family structures and gender roles are absent or subverted.