Shiu Kase is a Japanese voice actress known for her work in anime, particularly in projects released under the ComicFesta label. Her career includes roles across several OVA and web anime series, with a notable concentration of credits between 2019 and 2024.

Kase is recognized for providing the voice of Megumi Sasahara in the series Fire in His Fingertips, specifically for the premium version of the show. This series, also known as Yubisaki kara Honki no Netsujou: Osananajimi wa Shouboushi, tells the story of a woman reconnecting with her childhood friend, a firefighter, after a fire at her apartment. Kase voiced the character in both the first season released in 2019 and the second season, Fire in His Fingertips 2: Koibito wa Shouboushi, which aired in 2021. In the on-air or television versions of the same series, the character Megumi Sasahara was voiced by Akari Harashima. This dual casting is a standard practice for the ComicFesta brand, where a more explicit premium version features a different cast from the broadcast version.

Beyond this role, Kase has voiced other characters in anime productions. Her major voice roles include Mitsuki in Kimi ga Suki. The Animation from 2021, Saaya Minato in the OVA series Tsundero released between 2023 and 2024, Mizuki Miyama in Yumemiru Otome, Seika Yumenoki in Imaria, and Ami Sasaki in Midareuchi. The latter three roles were all part of OVA releases announced for 2024.

Kase's recurring professional collaborations often involve projects associated with the ComicFesta brand, which specializes in producing adult-oriented romantic anime for a mature audience. All of her confirmed anime credits, from Fire in His Fingertips to Tsundero and others, fall under this category of production. A notable achievement in her career is being consistently cast in lead or primary voice roles for multiple OVA series over several years. Her work on the first and second seasons of Fire in His Fingertips in the role of Megumi Sasahara remains her most widely recognized credit.