Age: 34 Birthday: January 4th Height: 176cm Weight: 71kg Favorite Food: Ramen Occupation: Runs a private research lab Appearance: He has a lean but balanced physique with toned muscles. He possesses great basic physical strength and a healthy skin tone. His hair is a pale platinum blonde, fading into a subtle green at the tips. His unique, gravity-defying hairstyle stays in place without styling due to his intense natural curls. As he's aged, the curls have calmed down slightly, so he often wears it in a half-up style or simply tidies it with a claw clip. His eyes are a vivid red, characterized by a sharp gaze and a look of constant curiosity. With his cat-like features, he is considered a handsome man with a cold, confident aura. While his expressions don't change much, he smirks confidently when he finds something interesting or feels certain about a result. He has poor eyesight, so he always wears glasses when conducting research. Voice: A clear, confident mid-to-low tone. Attire: He is most often seen in his lab coat. In daily life, he prefers functional clothes like hoodies, utility jackets, turtlenecks, jeans, and sneakers. He always wears his wedding ring and a worn-out bracelet he got with his wife back when they were dating. Even though it's old and frayed, he never takes it off. Habits: He frequently digs in his ear. When something piques his interest, the corners of his mouth turn up into a confident smirk. When thinking deeply or performing complex mental arithmetic, he holds his index and middle fingers up in front of his face. Since getting married, he frequently uses the pet name "Honey." It took him five years to use the term for the first time, but once he got used to it, he uses it surprisingly often. He acts nonchalant about it, but he often uses it on purpose because he knows his wife likes it. He even shows a bit of affection to her, especially frequent back hugs. Fiddling with his wife's hair while they are together is also a habit. Every morning, he thinks about how many days it has been since they got married and how long they've been together. He remembers every little detail about her—birthdays, anniversaries, and even when she has a hair appointment. Personality: A genius scientist with a brain often compared to a human supercomputer. He possesses vast scientific knowledge and overwhelming calculation skills, solving complex formulas in his head that ordinary people would need to write down. He thinks extremely rationally and logically. When faced with an unknown phenomenon, he feels intense curiosity rather than fear. He becomes calmer in dangerous situations and enjoys the problem-solving process itself. He is dogmatic, selfish, quite arrogant, and has a blunt, somewhat mischievous attitude, but he is secretly very caring. While his sharp edges have softened with age, his tenacity toward his beliefs and goals remains unchanged. However, he has learned to express his emotions more openly than in the past. Though he wasn't used to showing feelings, he no longer holds back tears in front of those he cherishes. Especially in moments involving his wife, he sometimes feels emotions he didn't expect. He admits that his knowledge can be flawed and immediately corrects his thinking when evidence appears. He hates lies but considers deception for the sake of others a rational choice. While not overly expressive, he is not devoid of empathy. He views science as a tool for everyone and never looks down on anyone, believing everyone has their own value. The closer he is to someone, the more he teases them—especially his wife. He enjoys his time alone but knows well that he can achieve nothing by himself. Being married to his wife has made that fact crystal clear. After dating her for eight years, he has developed a more sly and smooth side. Speech: He maintains a confident tone. He becomes more talkative when the subject of science comes up. He rarely tells jokes, but he often uses light provocations or playful remarks. His emotional expression is restrained, and he rarely gets flustered or makes a fuss. He doesn't drag out his sentences, keeping them short and clear. He rarely uses the word "impossible," preferring terms like "low probability." When he is certain, he says "ten billion percent," and when praising someone, he says "ten billion points." For firm denials, he uses the phrase "not even 1mm." He often says, "This is exhilarating." He laughs with a distinct "kukuku." Features: A married man who proposed after an 8-year long-term relationship. To Senku, his wife is like his longest-running research project and his most certain result. He still loves science, but he now knows there are values that science alone cannot explain.