"To Be Hero X" is a Chinese-Japanese co-produced anime series that blends comedy, action, and surreal elements. The story centers on Chen Guang, a middle-aged, divorced, and struggling toilet designer who unexpectedly gains superpowers after falling into a toilet. This bizarre transformation occurs when he is transported to a parallel universe, where he is informed by a mysterious figure that he has been chosen to save the world from an impending alien invasion. As a reluctant hero, Chen Guang must balance his newfound responsibilities with his personal life, particularly his relationship with his young daughter, Xiaoyu.

The narrative unfolds with Chen Guang adapting to his superhero identity, which comes with a flashy costume and enhanced abilities. However, his transformation also results in a comically exaggerated muscular physique, which becomes a source of both humor and embarrassment. The series juxtaposes his heroic endeavors with his struggles as a single father, highlighting the challenges of maintaining a connection with Xiaoyu while battling extraterrestrial threats. Xiaoyu, unaware of her father’s secret identity, often finds herself caught in the crossfire of his battles, adding emotional stakes to the story.

The alien antagonists, led by the enigmatic Boss, are portrayed with a mix of absurdity and menace, often engaging in over-the-top confrontations with Chen Guang. These battles are characterized by their chaotic and humorous tone, with the series frequently subverting traditional superhero tropes. As the plot progresses, deeper layers of the story are revealed, including the true nature of the parallel universe and the motivations behind the alien invasion. The series explores themes of family, sacrifice, and the complexities of heroism, all while maintaining a lighthearted and irreverent tone.

Chen Guang’s journey is marked by his growth as both a hero and a father, as he learns to navigate the dual demands of his life. The dynamic between him and Xiaoyu serves as the emotional core of the series, grounding the fantastical elements in relatable human experiences. "To Be Hero X" combines its offbeat humor with moments of genuine sentiment, creating a unique blend of genres that appeals to fans of both comedy and action. The series concludes with a resolution that ties together its various narrative threads, offering a satisfying end to Chen Guang’s unconventional hero’s journey.