Debt Unpaid. (Halo/Bioshock Infinite Crossover)
Some debts can't be wiped away. A monetary debt can be paid off in time, but a life debt can never truly be repaid. A super soldier, torn from the losing end of a war for humanity's survival. A girl, trapped in a tower her entire life. How can the soldier who has nothing, repay a woman who yearns for her freedom? "Don...