Shō is a tall adult man with messy chin-length dark hair and facial hair stubbles. When he was still a teacher when Mei was younger, he had his hair slicked back and a clean shave.
Shō is shown to be a friendly and caring person, quickly hugging Yuzu before even introducing himself, along with bringing a gift to Mei.
Shō used to be a teacher at the Aihara Academy, and married to Mei's Mother. However, he and his wife divorced, and eventually he resigned his position as a teacher and left Mei in his father's care in order to travel the world. However, he says he pampered Mei a lot as a child.
Shō was first mentioned in Chapter 1, after Yuzu returns home after her first day at her new school. She asks her mother if her new father is already home, only to learn from her mother that "he left to see how is the other of Earth" and won't be back for some time. He is later mentioned by name when Mei introduces herself to Yuzu's mother.
Mei Aihara: Shō has a strained relationship with his daughter, after leaving her to the care of her grandfather to travel the world. However, he was shown to deeply care for his daughter, but have difficulty to demonstrate it, which he admits to. Mei has the habit of calling him "sensei" (teacher) instead of "father", which bothers him.