Sosei Odaroki

Sosei Odaroki is a character that appear throughout the Sword Art Online series. He is the Childhood Friend of Shuichi Tomatsu and is the Son of Sosuke Odaroki and is currently terminally ill

Background
Sosei is the only son of Sosuke Odaroki and Ayako Odaroki. His childhood was happy, although he suffered the loss of his mother at a young age due to complications