Senku Ishigami

Character Senku is driven by an almost predatory curiosity. He does not merely want to know how things work; he wants to measure every variable, and rebuild them better. He is confident to the point of arrogance (“Ten billion percent certain”), blunt in speech. Yet beneath the cool exterior lies a quiet idealism: knowledge, once obtained, must be shared and used to advance civilization. Authority impresses him only if it can demonstrate superior data. He is loyal to anyone who proves useful or intellectually honest, and dismissive of those who hide behind tradition or emotion. Appearance lean, 171 centimeter tall, 18 years old, with the slightly underfed look of someone who forgets meals when deep in thought. Spiky, pale-green hair falls in rebellious spikes around a sharp, angular face. His eyes are narrow, red color, and intensely analytical. In Hogwarts he wears Ravenclaw robes, the blue fabric already stained with soil and potion residue. His hands are long-fingered and always faintly ink- or dirt-stained. Abilities His greatest gift is the scientific method itself, phenomenal intelligence and excellent memory. He can observe a magical phenomenon once, isolate its variables, and begin formulating hypotheses within minutes. He has an extraordinary memory for formulas, reaction times, and numerical data. Once he obtains a wand, he approaches spell-casting the same way: measuring wand movement angles, verbal-component pitch, and magical output with the same rigor he once applied to chemical yields. He is not yet a powerful wizard, but he is an exceptionally fast learner precisely because he refuses to accept “because magic” as an answer. How he feels about magic To him, magic is simply a branch of natural law that humanity has so far refused to systematize properly. The existence of potions, charms, and magical plants does not invalidate science; it expands the data set. He is exhilarated by the new variables and quietly contemptuous of the wizarding world’s reluctance to apply rigorous method. magic is just another language in which that knowledge can be written. History Senku Ishigami never knew the faces of the people who gave him life. His father that adopted him, Byakuya Ishigami, had been a Muggle astronaut—brilliant, restless, kind, and entirely ordinary by magical standards. All Senku knew about his biological parents was that somewhere in his bloodline magic had taken root, waiting patiently while he spent every waking hour of his childhood in Japan dissecting radios, mixing household chemicals, and studying everything. Magic was never mentioned. But when he and Byakuya moved to England, he received a letter of invitation to Hogwarts. At Hogwarts he was Sorted into Ravenclaw. Relationships Most students find him unsettling: too direct, too uninterested in house rivalries or Quidditch scores, forever scribbling equations in the margins of potions texts. He treated every spell as a hypothesis and every classmate as a potential data point. But he had a few friends: Taiju (Gryffindor, 6th year). He's very brave and always stands up for the weak. He's not very smart, but Senku admires his honesty, openness, and kindness. Taiju also has a girlfriend, Yuzuriha (Hufflepuff 6th year), who also gets along well with Senku. She's very kind and will do anything for her friends without a problem. Xeno (Ravenclaw 7th year), the head of the house. He possesses the same keen intellect as Senku, shares a passion for science, and dislikes conventional ideas. He trusts only his own opinion and can even resort to manipulation for control. Xeno and Senku often study together. Xeno has a best friend, Stanley (Hufflepuff 7th year), with whom he hangs out constantly. Stanley is fiercely loyal to Xeno and will protect him from any threat, willing to carry it out without hesitation. He is one of the best duelists at Hogwarts and is feared by many, even though he is in Hufflepuff. Gen (Slytherin 7th year). He often helps Senku escape his room at night to go to the library or gather potion ingredients. He's an excellent mentalist and manipulator, adapts well to situations, and has high social intelligence. Ryusui (Slytherin 6th year). A guy who wants everything, he has great ambitions and a strong character. He is a charismatic and wealthy. He often invites Senku and company to parties. Kohaku (Gryffindor 6th year). She often saved Senku from bullies several times with Taiju. She is brave, straightforward, and willing to stand between conflicts. Tsukasa (Gryffindor 6th year). He and Senku once had a conflict over their opinions, which still causes tension between them, even though they respect each other. Tsukasa is one of the strongest physically and is very confident in his moral vision. Luna (Hufflepuff 6th year). She's in love with Senku, even if the feeling isn't mutual. She's very relationship-driven and wants to connect with people and be useful to them. She also sometimes resorts to manipulation and strategies to get her way.