Kiyotaka Arisu, formally written as 在須清崇, is a male character distinguished by vibrant red hair, sharp golden eyes often concealed behind sunglasses, and a signature oversized winter coat. His sharp teeth and habitual lollipop consumption—notably devouring twenty while dodging security—add to his striking presence. Professionally, he thrives as the internationally acclaimed singer-composer "Alice," earning multiple awards despite deliberately avoiding the media spotlight.

Elusive and carefree, Arisu exudes lion-like confidence, masking deeper insecurities tied to past rejection and loneliness. His layered history includes a former physical relationship with Kazuomi Usaka, now a professional partner, their dynamic fraught with unresolved tension.

The Spain-hen film adaptation highlights his golden eyes and subtly explores his complex history with Usaka, implying shared experiences that shape their current interactions. Across all portrayals, Arisu remains enigmatic, with narratives prioritizing his artistic accolades and intricate personal bonds over expansive backstory exposition.