The film 'Demon Slayer: Kimetsu no Yaiba Infinity Castle' does not explicitly portray LGBTQ+ characters or themes within its narrative. It centers on action, drama, and the protagonist's quest, continuing the main storyline of the Demon Slayer Corps. While some LGBTQ+ representation exists in the broader series' supplementary materials, it is not a focus or explicit element within this specific movie.

Based on currently available information, Demon Slayer: Kimetsu no Yaiba Infinity Castle does not depict transsexual characters or themes of gender and sexual transformation. The film's narrative focuses on demon slaying and character battles, with no identifiable elements related to transsexual identity or experiences.

The provided information explicitly states that there is no indication of gender swapping in "Demon Slayer: Infinity Castle." Characters maintain their original genders as established in the manga and previous anime adaptations, continuing the story with the same gender identities.

The film, an adaptation of the Demon Slayer manga, is explicitly stated to maintain consistency with the original Japanese context. Its characters and setting remain rooted in Japanese culture without alterations for diverse racial representation or race swapping, aligning with the source material.