For many fans, the name became unforgettable after her performance in the 2018 independent film The Sound of Hydrangeas (タイトル仮称). In the film, Oishi played a young hospice nurse torn between professional duty and a secret past with a terminally ill patient. The role required immense emotional range—one scene demanded a five-minute monologue delivered in a single take, where her character shifts from cold professionalism to volcanic grief and back to stoic resolve.
Then she walked home, not quickly, not slowly, just—present. For the first time in years, the silence around her did not feel like a sanctuary. It felt like a room waiting to be filled with voices. Ayaka Oishi
Expanding into anime, Oishi voiced the antagonist in the hit series Chrono Custodians (2022). Her performance as a time-traveling revolutionary was praised for its nuanced delivery—giving a villain a deeply sympathetic, almost poetic sadness. For many fans, the name became unforgettable after
A woman dancing in a rainstorm, laughing. A river at twilight, the water turned to molten silver. A pair of hands holding a single cherry blossom. And one portrait—a young woman with sharp eyes and a quiet mouth, standing in front of a closed gate. On the back of the negative case, in faded pencil: “K. The one who got away. 1935.” Then she walked home, not quickly, not slowly,
Oishi’s interdisciplinary reach extends to environmental monitoring. She has participated in high-time-resolved measurements of biogenic volatile organic compounds (BVOCs) in Japan. This research utilizes in-house built sampling devices to understand atmospheric compositions in both urban and forested areas. Comparison of Exendin-4 and Its Single Amino Acid ... - PMC