Masaki Gaillard is a central character in the visual novel 'Amairo Islenauts.' He serves as the protagonist, known for his inquisitive nature and determination. Set on the magical island of Lyserg, Masaki enrolls in a unique school dedicated to studying celestial phenomena. As he navigates his new environment, he forms relationships with various characters, each with their own mysterious backgrounds. Masaki's journey involves unraveling the island's secrets and understanding the complex dynamics between humans and celestial beings. His character is defined by his curiosity and desire to bridge the gap between different worlds.