Red Velvet's first Japan solo concert "Red Velvet 1st Concert "Red Room" in JAPAN," which drew 20,000 people over two days, is now available on DVD! This work includes the performances held on March 28 and 29, 2018 at the Musashino Forest Sports Plaza Main Arena in Tokyo, Japan." Red Flavor," "Russian Roulette," and "Rookie," as well as the hot song "#Cookie Jar," which was released on July 4, 2018, and "Peek A Boo," which was their first performance in Japan. The album also includes the song "'Cause it's you," which she sang for her fans whom she had not been able to see for a long time. In addition, documentary footage of the band's first nationwide tour in Japan and performances from the concert hall tour are also included as bonus footage. It is also packed with valuable off-shot footage.