"Ryūsei no Rockman" is a manga adaptation of the Capcom video game series of the same name, written by Ryo Takamisaki. The story is set in a futuristic world where advanced technology, particularly electromagnetic wave-based communication, is integrated into daily life. The protagonist, Subaru Hoshikawa, is a reserved and introverted middle school student who struggles with social interactions and often feels disconnected from those around him. His life takes a dramatic turn when he encounters War-Rock, an extraterrestrial electromagnetic life form that merges with him, granting him the ability to transform into the powerful being known as Rockman.

The narrative revolves around Subaru's dual life as an ordinary student and as Rockman, tasked with defending Earth from malevolent electromagnetic wave beings known as FM-ians. These FM-ians, led by the enigmatic and destructive FM King, seek to invade and conquer Earth by corrupting its technology and manipulating electromagnetic waves. Subaru, alongside War-Rock, must navigate this new reality, balancing his personal struggles with the responsibility of protecting humanity. Throughout the series, Subaru forms alliances with other Wave-Changers—individuals who, like him, have bonded with FM-ians but choose to fight against the invasion. These allies include Luna Shirogane, who transforms into Harp Note, and Zack Temple, who becomes Solo.

As the story progresses, Subaru uncovers deeper mysteries surrounding the origins of the FM-ians and their connection to War-Rock. The narrative explores themes of identity, friendship, and the ethical implications of advanced technology. Subaru's journey is marked by personal growth as he learns to overcome his insecurities and embrace his role as a hero. The series also delves into the moral complexities of the conflict, as not all FM-ians are inherently evil, and some seek coexistence with humans. The climax of the story involves a high-stakes confrontation with the FM King, culminating in a resolution that ties together the fates of Subaru, War-Rock, and the FM-ians.

The manga maintains a balance between action-packed battles and character-driven storytelling, with a focus on Subaru's internal struggles and his evolving relationships with those around him. The artwork complements the futuristic setting, with detailed depictions of electromagnetic wave technology and dynamic fight sequences. "Ryūsei no Rockman" offers a cohesive narrative that appeals to fans of science fiction and action, while also addressing deeper themes of connection and responsibility in a technologically advanced world.