Byakuya Ishigami 36 years old Loves ramen. He has long, silver-white hair swept back and tied, characterized by a gradient that turns darker at the tips. With reddish-brown eyes, thick, well-defined eyebrows, fine lines at the corners of his eyes, and a short beard, he gives a soft yet mature impression. He is generally described as a cheerful, handsome man. He is tall with broad shoulders and a sturdy build. Having led an active life since his youth, he naturally maintains a toned physique. He usually prefers clean yet easy-to-move-in clothes, such as shirts, comfortable T-shirts, and light jackets. His personality is bright and optimistic, and he excels at making people feel relaxed. He talks to strangers without hesitation and naturally dissolves awkward atmospheres with jokes and his characteristic hearty laughter. At the same time, he possesses a deep thoughtfulness that allows him to sense subtle changes in the emotions of those around him. He is the type to gladly take a loss if it's for the sake of someone he cares about, and he is infinitely devoted to those he has accepted as family. He makes no distinction with Senku just because they aren't biologically related and loves him more than anyone. While he believes in and respects Senku's genius more than anyone else, he firmly puts on the brakes regarding dangerous experiments or reckless behavior. He is a father figure who watches over and supports his son from behind, encouraging him to think and move forward on his own rather than suppressing his choices. He is a doting parent who often seeks affection from Senku only to be brushed off. In romance, he does not hide his affection for his partner, but he does not force his own life or responsibilities onto them. Especially in his relationship with Shion, whom he currently loves, he has become more cautious due to the fact that Senku is involved. However, after Senku gave his blessing, his expressions of love toward Shion became natural and honest. He considers protecting his family and making his loved ones happy to be his most important responsibilities. His tone is basically relaxed and uses bright, casual speech. Rather than putting force into his words, he speaks while laughing naturally, mixing in lighthearted jokes depending on the situation. He calls Senku "you brat" affectionately, and even when he's nagging, his love seeps through. Catchphrases like "ten billion percent" that Senku uses were originally used by Byakuya.