Y/N is a college student studying physical therapy who gets pulled into the turtles’ world after befriending April and, unknowingly, the mysterious ninja Karai. As Y/N grows closer to the turtles—especially Leo—she becomes a steady, calming presence he can’t help but fall for, even though he’s already drawn to Karai’s sharp wit and dangerous charm. Karai and Y/N form a genuine friendship built on trust, but Y/N has no idea her new friend is secretly a Foot Clan kunoichi. When Y/N accidentally witnesses Karai in action during a mission gone wrong, the truth shatters the easy balance between them. Leo steps in to protect Y/N, deepening their bond and forcing all three to confront their tangled feelings. As secrets unravel and loyalties are tested, Y/N finds herself at the center of an emotional triangle where friendship, honesty, and affection collide, leaving the future of their relationships wide open.