ambassador for the city of Pocheon on July 23, 2019. 2020–present: Mr. Trot and rising popularity Lim entered TV Chosun's music competition show Mr. Trot, which aired from January 2 to March 14, 2020. During the final episode of the show, he was eventually crowned the winner out of 17,000 applicants. He said, "I'm so thankful for my mother and grandmother. The live finals were held on the anniversary of my father's passing. I'll think he gave us a gift because he felt sorry for leaving my mother alone. I really thank my father as well." After the show ended, he additionally signed a one-and-a-half-year management contract with New Era Project. He also joined the main cast of Romantic Call Centre and , the follow-up variety shows of Mr. Trot. On April 3, 2020, Lim released a single titled "Trust in Me". Written by lyricist Kim Eana and composer , the track was produced as a special song for Lim as the Mr. Trot winner. "Trust in Me" attained commercial success, becoming Lim's first top-20 single in his native country. The song debuted at number 20 on South Korea's Gaon Digital Chart, later peaking at number 11. At the end of the year, it earned him a Melon Music Award for Best Trot and a Genie Music Award for Best Trot Track. In August 2020, the , one of the major weekly news magazines in South Korea, announced the results of "2020, Who Makes Korea Move" survey. Lim was ranked 5th (5.8%, tied with singer Lee Hyori) for leading the Mr. Trot craze and occupying the advertising world. Later that year, the magazine named him one of the "100 Leaders for the Next Generation". In addition to his singing career, Lim made his cameo appearance on TV Chosun's historical fantasy series Kingmaker: The Change of Destiny. On October 1, 2020, he made his debut as an emcee, co-hosting the first annual Trot Awards with television presenter Kim Sung-joo and actress Jo Bo-ah. He also made his big screen debut through Mr. Trot: The Movie, a musical documentary film starring the top six finalists of Mr. Trot. The film was a commercial success, selling more than 150,000 tickets after release. On November 4, 2020, Lim collaborated with SsangYong Motor on the promotional single "Hero". Unlike his previous singles, the song's musical style approximates pop music. He premiered the track at an