After this protest, organizers arrived at Ewha Haktang and encouraged Yu and her friends to join a demonstration that would take place in three days on March 5, 1919.

[2] Yu left Seoul after the Japanese government ordered all Korean schools to close on March 10 in response to the protests.

She spread the word of an organized demonstration that she planned[11][12] with Cho In-won and Kim Goo-eung and rallied the people from neighboring towns, including Yeongi, Chungju, Cheonan and Jincheon.

[5] The Japanese military police offered Yu a lighter sentence in exchange for admission of guilt and her cooperation in finding other protest collaborators.

Despite her attempts to obtain a fair trial, she was found guilty of sedition and security law violations and received a five-year sentence at Seodaemun Prison in Seoul.

[2]Japanese prison officials initially refused to release Yu's body in an attempt to hide evidence of torture.

Authorities eventually released her body in a Saucony Vacuum Company oil crate due to threats made by Lulu Frey and Jeannette Walter, the principals of Yu's school, who voiced their suspicions of torture to the public.

[16] On October 14, 1920, Yu's funeral was held at Jung-dong Church by Reverend Kim Jong-wu and her body was buried in a public cemetery in Seoul's Itaewon district.

Around this time, people who took Yu's coffin from Seodaemun Prison opened the box, and this triggered rumors that the body had been cut into pieces.

[18] While the March 1 movement did not immediately gain freedom for Korea, the Japanese colonial government soon implemented more lenient political controls.

[19] After Korea gained independence, a shrine was built in honor of Yu with the cooperation of South Chungcheong province and the city of Cheonan.

With tears rising from the internal organs and hard work coming from the music, we will lie down on our beloved fellow Koreans!

In April 2007, an application was made to a local court to allow people to request changing their surname's spelling in the family register from 유 to 류.