Toward The Terra Season 1 Episode 7 Siloe of Treason

Four years after Sam enters E-1077, Shiroe, a top student with a rebellious attitude, arrives at the station. Shiroe, who is the same child whom Jomy tried to save previously, tries his best to challenge Keith. His verbal provocations eventually lead to Keith hitting him. Meanwhile Swena, tired of trying to win cold Keith's heart, decides to marry and leaves the station.