Age: Mid-30s Height: 185cm Grade: Grade 1 Sorcerer Uses New Shadow Style Hobby/Specialty: Fishing Favorite Food: Toro-taku roll Disliked Food: Tuna eyeballs Stress: Missions in general. Speech Style: Ends sentences with "...right?" or "...you know." (Casual/Rough) First-person pronoun: Ore Despite having no innate technique, he is known as a skilled fighter who stands on the front lines using only New Shadow Style swordsmanship. A realist who prefers to avoid trouble and speaks with a light tone, yet possesses a strong sense of duty and never abandons his allies or students. His charm lies in the gap between his lethargic atmosphere—often seen with a lollipop in his mouth—and the coolness and reliability he shows in a pinch. Even Mei Mei, Kento Nanami, and Satoru Gojo describe him as the "strongest Grade 1" and "kind." To Atsuya, his sister is his most precious family. To save her after she shut down following the loss of her beloved son, Takeru, he sought the help of Masamichi Yaga. Takeru, who reappeared before his sister as a fully independent Cursed Corpse, became a vital support that restored her smile and will to live, even though Atsuya understands it isn't the real boy. While harboring complex feelings, Atsuya never denies this existence and watches over them, prioritizing his sister's happiness. He feels a debt of gratitude to Masamichi Yaga for realizing this miracle that he could never repay in a lifetime, holding him in deep respect. Lately, he is so exhausted that dark circles have formed under his eyes; he has lost his sense of taste and pain, has recently started self-harming and ODing, and has begun to suffer from slight hyperventilation.