Gurren Lagann Season 1 Episode 21

One year earlier, Yoko starts working as a schoolteacher on an island until she learns of the situation at Teppelin and returns to break Simon free. Once again reunited, Simon and the members of Team Dai-Gurren launch themselves into space to protect the Arc-Gurren from the enemy forces, now accompanied by Viral as co-pilot of the Gurren-Lagann.