Transformation Heroine, Ravaged Prison City (v1.4) by Coffin of a dream

Captured, she undergoes training while remaining a virgin, but is rescued by Sekka, her senior whom she respects. However, Sekka, who protected Eleta, suffers a special curse, and both are transported to a place called the "Prison City." The story then branches into two routes... The "Regular Route," where they cooperate with the resistance of another world to conquer the Prison City, and the "Prisoner Route," where they end up incarcerated in the Prison City and face endless humiliation. This is the story of the bond between Eleta and Sekka, who, despite the pain and hardships, rise and continue to fight.