Tsuyoshi Imagawa is a 37-year-old member of the idol group Eternal Boys. His performance career began at age 3 as a child actor, leading to widespread recognition at age 5 following a commercial appearance. Acting opportunities significantly diminished after he entered junior high school. Facing this downturn, Tsuyoshi pursued diverse performance paths including singing, dancing, and enka (traditional Japanese singing). None achieved lasting success or fulfilled his enduring dream to remain in the spotlight, defining much of his adult life before joining the idol group.

Driven by a persistent desire to perform and gain recognition, Tsuyoshi continually sought opportunities despite repeated setbacks. Joining Eternal Boys represents his latest effort to realize this long-held dream. Within the group, he contributes his extensive performance experience while navigating the physical demands and training required of an idol later in life. His background in various performance arts, particularly enka, informs his approach to this new career.

The name Tsuyoshi signifies "sturdy, strength, robust, tough," reflecting his enduring determination. His surname, Imagawa, combines "now" or "present" with "river" or "stream." The franchise includes a television series, a manga adaptation, a theatrical film titled *Eternal Boys NEXT STAGE*, and an otome game. Tsuyoshi Imagawa's story arc focuses on his journey from childhood fame through adult career struggles to his efforts as a member of Eternal Boys.