Iori Saeki (佐伯 伊織 ) also known by the stage name NU-KO, is a Japanese singer and voice actress affiliated with Swallow. Beginning her activities as a dōjin (self-published) musician in 2012, she began voice acting activities in 2018. She is known for her roles as King Halo in Uma Musume Pretty Derby, Maiko Kurashiki in Hachigatsu no Cinderella Nine, and Kimie "Tanpopo" Kamata in Oresuki.
2026TETSURYO! Meet with Tetsudou MusumeTV showas Azami Takashima (voice) · 12 episodes2026An Observation Log of My Fiancée Who Calls Herself a VillainessTV showas Silica Lunea (voice) · 12 episodes2026Noble Reincarnation: Born Blessed, So I'll Obtain Ultimate PowerTV showas Shirley Grantz (voice) · 12 episodes
2026Journal with WitchTV showas Motchi (voice) · 3 episodes
2025A Mangaka's Weirdly Wonderful WorkplaceTV showas Shiori Asakura (voice) · 13 episodes2025100 METERSMovieas Kawano (voice)
2025Harmony of Mille-FeuilleTV showas Sayaka Iguchi (voice) · 4 episodes
2025The Shy Hero and the Assassin PrincessesTV showas Ciel (voice) · 12 episodes
2025Umayuru: Pretty GrayTV showas King Halo (voice) · 1 episodes2024Umamusume: Pretty Derby - Beginning of a New EraMovieas King Halo (voice)
2024Umamusume: Pretty Derby - Road to the Top MovieMovieas King Halo (voice)
2024Vampire DormitoryTV showas Woman C (voice) · 1 episodes
2024Uma Musume Pretty Derby 5th EVENT ARENA TOUR "GO BEYOND" - YELL - & - NEW GATE -Movieas King Halo
2024Pon no MichiTV showas Pai Kawahigashi (voice) · 12 episodes
2023Uma Musume Pretty Derby 5th EVENT ARENA TOUR GO BEYOND -WISH- & -GAZE-Movieas King Halo
2023The Quintessential Quintuplets∽Movieas Tsubaki (voice)2023The Dreaming Boy Is a RealistTV showas Mina Ichinose (voice) · 12 episodes
2023Blue OrchestraTV showas Rika Togane (voice) · 10 episodes
2023SSSS.DYNAZENON Grand EpisodeMovieas Kano Minami (voice)2023Saving 80,000 Gold in Another World for My RetirementTV showas Ilse (voice) · 4 episodes
2023The Tale of OutcastsTV showas Vivian (voice) · 13 episodes2023The Iceblade Sorcerer Shall Rule the WorldTV showas Amelia Rose (voice) · 24 episodes
2022UmayuruTV showas King Halo (voice) · 28 episodes
2022Tokyo Mew Mew NewTV showas Moe Yanagida (voice) · 24 episodes
2022Mirage Queen Prefers CircusMovieas Ai Iwasaki (voice)2022The Quintessential Quintuplets MovieMovieas Tsubaki (voice)2022Aharen-san wa HakarenaiTV showas Henzan-sensei (voice) · as Nukko the Tanuki (voice) · 4 episodes2022The Executioner and Her Way of LifeTV showas Menou (voice) · 12 episodes
2022Uma Musume Pretty Derby 4th EVENT "SPECIAL DREAMERS!!"Movieas King Halo2022Akebi's Sailor UniformTV showas Mika (voice) · 2 episodes
2021Muv-Luv AlternativeTV showas Kei Ayamine (voice) · 24 episodes
2021ラピスリライツ・スターズ 1st Orchestra「LIGHT UP the MAGIC」Movie2021How a Realist Hero Rebuilt the KingdomTV showas Julia (voice) · 2 episodes2021Revue Starlight: The MovieMovieas (voice)2021SSSS.DYNAZENONTV showas College Student β (voice) · as Kano Minami (voice) · 4 episodes2020Adachi and ShimamuraTV showas Yashiro Chikama (voice) · 12 episodes
2020Revue Starlight: Rondo Rondo RondoMovieas Class B Costumer (voice)
2020UmayonTV showas King Halo (voice) · 12 episodes
2020Lapis Re:LiGHTsTV showas Ashley (voice) · 12 episodes
2020Revue Starlight 3rd StarLive "Starry Diamond"Movieas Yuyuko Tanaka
2020Revue Starlight 3rd StarLive "Starry Diamond" - DocumentaryMovieas Self
2020NekoparaTV showas Vanilla (voice) · 12 episodes
2020RebirthTV showas Kozue Kasugai (voice) · 48 episodes2019ORESUKI Are you the only one who loves me?TV showas Kimie "Tampopo" Kamata (voice) · 6 episodes2019Weathering with YouMovieas (voice)
2019Shoujo☆Conte All StarlightTV showas Yuyuko Tanaka · 26 episodes
2019Cinderella NineTV showas Maiko Kurashiki (voice) · 12 episodes2019Demon Slayer: Kimetsu no YaibaTV showas (voice) · 2 episodes2019The Quintessential QuintupletsTV showas Tsubaki (voice) · 4 episodes2018Revue StarlightTV showas Hinano Kyomoto (voice) · as Marina Banbaen (voice) · as Child (voice) · as Class B Costumer (voice) · as Classmate (voice) · 1 episodes
—Maiden BloodTV showas Eva (Voice) · 1 episodes
—The Moon on a Rainy NightTV showas Saki Kindaichi (voice) · 1 episodes