is a Filipino-Japanese actress known for being a finalist in Philippine reality television series, '. She is best known for her role as Michiko in the iWantTFC original series, He's Into Her (2021). She is also a part of the first batch of stars under Rise Artists Studio, a talent management arm of ABS-CBN Films.
Oinuma was born on July 22, 2000, in Nagoya, Japan to a Filipino mother and a Japanese father. She lived in Japan until she was 4 years old before moving to the Philippines. She later grew up in Cabanatuan City, Nueva Ecija, where her family maintains a home. Oinuma has two half-siblings and a stepfather in the Philippines. When she was 13, her mother grabbed the opportunity of migrating to Japan with her after a friend of theirs, whose mom works in an agency, told them about the support offered to women who have half-Japanese children.
In high school, she became a varsity player of their school's basketball team. And during summer breaks, she worked on part-time jobs in order to help her mom with their finances.
In July 2023, she graduated from senior high school in Bartolome Sangalang National High School in Guimba, Nueva Ecija. Thereafter, she pursued college at Philippine Women's University taking up a degree in psychology. She is one of Boy Abunda's scholars.
In 2018, Oinuma made her television debut when she joined the reality show, ', where she placed eighth overall.
Before venturing into acting, she took part in the Star Hunt Academy Boot Camp (the exact program that created the now known P-pop groups, BINI and BGYO) but could not complete the training program.
In later part of 2019, Oinuma got her first television role as a cast in Parasite Island. A year later, she had some acting stints in Maalala Mo Kaya: Mata and television sitcom Home Sweetie Home Extra Sweet.
She was launched as one of the first batch of artists under Rise Artist Studio, in February 2020.
She subsequently starred in the adaptation of a Wattpad story, The Four Bad Boys And Me, portraying the lead character, Candice Gonzales. The series was co-starred by fellow PBB alumna Maymay Entrata and co-Rise Artists Rhys Miguel, Jeremiah Lisbo and Aljon Mendoza.
Another series, Love on Da Move, in which she was cast as Chacha, was set to air but was cancelled before any episodes were broadcast.
In May 2021, Oinuma portrayed Michiko Tarranza in the series He's Into Her, together with Belle Mariano and Donny Pangilinan.
On the same year, Oinuma played the role of Megumi in Love at First Stream, together with Lisbo, Daniela Stranner, and Anthony Jennings. The said movie was released in December 2021 as an official entry at the 2021 Metro Manila Film Festival.
During the "iWantTFC Unwrapped" event held in December 2021, it was announced that Oinuma had joined the cast of Tara, G! The iWant TFC original series premiered a year later in October 2022.
In early 2022, Oinuma reprised her role as Michiko Tarranza for the second season of He's Into Her.
In March 2023, it was announced that Oinuma will be starring in upcoming thriller drama series Fractured.
Notes:<br> <small>^ One of the Southeast Asia short-film trilogy inspired by the songs of pop trio New Hope Club.</small>
Notes:<br> <small>^ Rise Artists Studio contents.<br> ^ Fractured promo guestings. </small>
Notes:<br> <small>^ From the short film "School Year 2007", one of New Hope Club Southeast Asia short film trilogy.</small>
Notes:<br> <small>^ Performed with JC Alcantara as part/ continuation of the music film of the song "Hatid".<br> ^ As guest performer with the Tara, G! cast for the OST of the show with same title; and for the live stage acting with JC Alcantara.</small>