"Kouji Saruwatari is a major character in the Japanese manga series ""Reverend Ecstasy"". As one of the main protagonists, he plays a crucial role in the story's plot and development.

Saruwatari is first introduced as a high school student who is passionate about martial arts. He is depicted as a skilled fighter with a strong sense of justice and a desire to protect those around him. Despite his tough exterior, he also displays moments of sensitivity and compassion, particularly towards his childhood friend, Kaede Kirishima.

As the story progresses, Saruwatari's journey takes him beyond his hometown and into the dangerous world of underground fighting. Here, he must face off against opponents who are much stronger than him, relying on his quick reflexes and expert fighting skills to survive. He also develops a rivalry with another skilled fighter, Ryuji Takehara, who becomes both a friend and an enemy throughout the series.

Along with his physical abilities, Saruwatari possesses a strong sense of morality, often putting himself at risk to help others despite the potential danger. He is also fiercely loyal to his friends and family, willing to do whatever it takes to ensure their safety and well-being.

Overall, Saruwatari's character is defined by his strength, both in terms of his physical abilities and his unwavering sense of justice. Though he faces many challenges throughout the series, he never gives up, always striving for a better world and a brighter future for those he cares about."