The highly successful project "IM A SINGER" series returns with its long-awaited 4th installment after approximately three years and ten months! Following strong reception and sales for Vol.1, 2, and 3, this cover album showcases the many charms of Toshl as a truly one-and-only singer. Centered on anime song covers, including "Ai wo Torimodose!!," which is also used as the ending theme for the anime "Fist of the North Star -FIST OF THE NORTH STAR-," which has been broadcast since April 10, the album features well-known songs such as "Tamashii no Rufuran" from the film "Neon Genesis Evangelion: Death and Rebirth," "Guren no Yumiya" from the anime "Attack on Titan," and "Moonlight Densetsu" from the "Sailor Moon" series, as well as hit songs like "Mixed Nuts" from the anime "SPY x FAMILY" Season 1 Part 1 and "Niji" from the film "Stand by Me Doraemon 2." It also includes two original songs, "Unmei no Senko," which has already been performed live and left a deep impression on fans, and "Kirameki wa Kaze," a grand ballad woven with piano and strings. The IM A SINGER series never disappoints, and this is a truly fulfilling cover album Vol.4, infused with new appeal through Toshl's vocals.