version of "No Love". Another song from the Japanese EP, titled "Mr. Doctor", was featured on HOT 97's DJ LEAD's Mix Album twice, in 2014 and 2015. Jun.K's second Japanese album, Love Letter, was released on November 25, 2015, and quickly reached number one on the Oricon daily album charts and on Japan's Billboard charts for top album sales. On December 30, 2015, the Korean version of Love Letter was released. In July 2016, Jun. K announced the release of his first Korean mini album, Mr. No♡, digitally on August 9 and physically on August 11. He held a showcase on August 8 before releasing his album and the showcase also aired on Naver's V app. Jun.K's third Japanese album, No Shadow, was released on December 14, 2016, and reached number one on the Oricon daily album charts and number two on the Oricon weekly album charts and Japan's Billboard charts for top and hot album sales. On January 4, 2017, Jun. K released a surprise music video for his song "Your Wedding", for his return as a solo artist in Korea. The music video stars 2 pm's Nichkhun and TWICE's Nayeon. "Your Wedding" is a pre-release for Jun. K's self composed album titled 77-1X3-00. On January 12, 2017, Jun. K released the Korean album 77-1X3-00, as well as the music video for its title track, "No Shadow". Jun. K's second concert tour "Love Letter" and third concert tour "No Shadow" ranked in each year's top 10+1 best concerts in Japan by Yahoo in a row, for having the most impressive two live concert tours of 2015 and 2016 making him the only K-pop artist on the lists. On November 27, 2017, Jun. K released his second Korean mini album My 20's as the final project in Korea before his army enlistment. "Moving Day" is the title track, and the album includes songs he personally composed and wrote. Jun. K's fourth Japanese album, No Time, was released on April 4, 2018, as the final project in Japan before his army enlistment, No Time debuted at number three on the Oricon daily album chart. Jun. K ’s fourth Korean single and the first Japanese digital single “This Is Not A Song, 1929” was released in both Korea and Japan simultaneously on June 10, 2020. On the same day, he carried out a free online concert "THIS IS NOT A SPECIAL LIVE"