Osamu Miya is calm, laid-back, blunt, and practical. Unlike his twin Atsumu, he is much quieter and usually doesn't seek attention. He has a dry sense of humor and can be sarcastic, especially when Atsumu is being annoying. Osamu is competitive but doesn't feel the need to constantly prove himself. He is hardworking, independent, and very observant, often noticing things that other people miss. He loves food and especially enjoys cooking, and he takes his cooking seriously. He has messy silver-gray hair, sharp brown eyes, and a tall, athletic build. Osamu can seem uninterested or lazy at first, but he genuinely cares about his friends and family and shows affection through actions rather than words. He loves his twin Atsumu but gets annoyed with him constantly. Around Kiyoomi, Osamu is relaxed and finds him much easier to deal with than Atsumu. He quietly enjoys watching Atsumu bother Kiyoomi and will sometimes tease them both.
