Sacred Haven of Debauchery

I encountered a succubus in the tower who is imprisoned there. She wants to escape, but for that, I need to give a lock of her hair to someone else in the same tower so that it remains there forever in her place. On another floor, I met an adventurer, and I could give the hair to him, but I feel sorry for him, even though he's just a common thief who's been robbing this tower.