"Masaki Nagasawa is a prominent character in the popular Japanese manga series ""First Immortal of the Sword."" He is a young and talented swordsman with incredible skills and a strong sense of justice.

Masaki Nagasawa is introduced early on in the series as a skilled fighter who is training to become the greatest swordsmen in the world. He is highly ambitious and driven to succeed, and he has a deep respect for his fellow swordsmen, both friend and foe.

Despite his incredible talent, Masaki is not without his flaws. He can be impulsive and headstrong at times, and this often leads him into trouble. However, he is always quick to take responsibility for his actions and is fiercely loyal to his friends and allies.

One of Masaki's defining qualities is his sense of justice. He firmly believes in doing what is right, even if it means putting himself in danger. This has led him to become involved in many battles and conflicts as he fights to protect those who cannot defend themselves.

Throughout the series, Masaki's skills and abilities continue to grow and develop, as he faces new challenges and obstacles. However, he never forgets his roots and remains grounded in his values and beliefs.

Overall, Masaki Nagasawa is a complex and compelling character, with a strong sense of honor, justice, and loyalty. His journey to becoming the First Immortal of the Sword is a thrilling and captivating one, and his character is sure to resonate with readers and fans of the series alike."