Jinnytty

Yoo graduated from University High School in Irvine, California in 2010, then graduated from Yonsei University with a degree in Information and Interaction Design in South Korea.^[6][7]

Yoo started live streaming on Twitch at the end of June 2017. During this period, she liked to play Hearthstone, and she also watched professional player games or teaching videos.^{[8][9][10][11][12][13]}

After becoming popular, Yoo catered to the audience with high interactivity, pure style, and increased her Taiwanese content.^[14][15][16] She also traveled to Taiwan in March 2018 and held a fan meeting.

At the end of 2019, Yoo changed her target audience to European and American viewers and also traveled to the United States. During the beginning of COVID-19 pandemic, she stayed at the home of the American streamer EsfandTV for several months, and they streamed together from time to time.^[17][18]

From 2020 to 2022, Yoo traveled to and streamed live in South Korea, Europe^{[19][20][unreliable source?]} and the United States.^[13]

On October 6, 2022, it was announced that Yoo had signed with esports organization TSM.^[21]

In 2023, Yoo walked 1076 kilometers around the entire length of Taiwan in what has become her most popular streamed event known as Waddlethon, during which she gained over 90K followers and 6.5M hours watched.^[22][23] During her Waddlethon on April 24, 2023, Yoo encountered a veiled stalker that followed her around for about 4 hours. The police were contacted and the stalker was institutionalized.^[24][22] On Day 8 of her Waddlethon, May 1, 2023, she achieved a personal record of 26,902 concurrent viewers.^[25][22]

In April 2025, Yoo announced that she was barred from entering Taiwan after authorities found she had worked without a permit during a 2023 pop-up event for a video game company.^[26]

In May 2025, Yoo was attacked during a street livestream in Toulouse, France, by a man who thought she was filming him and struck her camera while shouting insults.^[27][28]