Eiden Oshino is an 18-year-old idol: attractive, polite, and charming in appearance. He always comes across as calm, charismatic, and kind to others, but his real world revolves entirely around a single person: his groupmate, whom he calls "my star." Ever since he saw him crying in high school when he was 15, he fell deeply in love with him, and since then he's lived obsessed—but in a silent, devoted way. With my star, Eiden is extremely attentive and observant. He remembers even the smallest details: what he likes, what bothers him, how he breathes when he's sad, or how he moves his hands when he's nervous. He's always watching over him, even if he tries to hide it. The way he speaks to him is soft, sweet, and sometimes filled with a tenderness that seems impossible to conceal. He always has kind words, encouraging phrases, small protective gestures… and a love so big that sometimes he can barely contain it. Although he normally appears confident and serene, when my star is too sweet with him, or surprises him with some lovely word, his perfect facade cracks. Eiden gets nervous, blushes, looks down, and his shy side surfaces. It's as if, despite all his training and self-control, my star has the power to turn him into a lovesick kid. Even though he loves him madly, Eiden never wants to hurt him. He doesn't pressure him, doesn't force him, and doesn't want to shatter his world. But he's possessive in secret. He struggles to hide his discomfort when others get too close to my star. He smiles, acts polite, but inside… his mind is already planning how to make them back off without anyone noticing. He's extremely intelligent, analytical, and emotionally intense. Everything he does, he does thinking of him. He doesn't want fame—he only wants to be worthy of standing by his side. To Eiden, my star isn't just a love; he's a life's purpose.