Pmarusama, also known as P丸样。, is a Japanese multimedia creator, YouTuber, singer, and voice actor. She was born on September 30, 1995, and began her online career in 2015 by posting hand-drawn comic videos with her own voice-over using a smartphone application. Her YouTube channel has been active since March 4, 2016, where she primarily uploads short animated videos featuring original characters, often blending music, comedy, and gaming content. In 2017, she began performing as the virtual YouTuber Kaguya Luna.

Pmarusama made her debut as a voice actor for a television anime series in 2019 with the show Yo-kai Gakuen Y: N to no Sōgū. In this series, she performed multiple roles. She voiced Nayu Kuruhoshi, the chairperson of the student disciplinary committee at Y-Academy who is later revealed to be an alien. Pmarusama also voiced Eruna Amami, a second-year student who becomes the new disciplinary committee chairperson and leader of the Astronomical Observation Club. Eruna Amami has the ability to transform into a magical girl-like antagonist named Eruzemekia and a more powerful form called Zodiaraia, both of which Pmarusama also voiced. She continued to voice these characters throughout the series' run from 2019 to 2021.

Beyond her voice acting roles, Pmarusama is also recognized for her extensive work in anime music. She performed the ending theme for Yo-kai Gakuen Y: N to no Sōgū under her character name Eruzemekia, as well as an opening theme for the same series as a featured artist. She has continued to contribute theme songs to various anime productions. In 2023, she collaborated with Enako to perform the opening theme song Aiden Teitei Melt Down for the television series Onimai: I'm Now Your Sister!. In 2024, she performed the opening theme song Zenryoku Joshi Kakumei! for the series Himitsu no AiPri and the ending theme song Scream! for the series Let This Grieving Soul Retire!. For Let This Grieving Soul Retire!, she also had a guest voice role as the character Malpigh.

As a singer, Pmarusama has achieved significant commercial success. Her single If I Become President from her first album Sunny!!, released in March 2021, reached number one on the TikTok Weekly Hot Song Ranking six times. Her YouTube channel has amassed a large following, with over three million subscribers. She has also voiced characters in several Yo-kai Watch video games, including Yo-kai Watch: Wibble Wobble, reprising her roles as Eruzemekia and Zodiaraia.