大蛇 凌

2nd year high school student.
Shinogu is the cousin of Suguru Oomi and is a Guardian meaning he is a descendant of the snake. He is the childhood friend of Saya Fujimori and is one year older than her. He acts like a big brother to her, as children Saya and Shinogu made a promise to one another and he gave her a teddy bear which Saya has kept to this very day. He is also childhood friends with Rei who he acts like a big brother too. Shinogu has an older sister called Fuyumi Oomi who is four years older. He is the youngest son of Chizuru and Tatsuyoshi Oomi. 
Wikia.