Cabin Fever

Kenny is placed under house-arrest and only Levi and Mikasa are suited for guard-duty. They set up base at an isolated cabin in the mountains, but a storm brews and they get snowed in. Once the cold starts kicking in, it's only logical to huddle your body heat together to avoid frostbite, but that's when Levi and Mikasa both realize they're experiencing more than just cabin fever.