Steins;Gate dj - Tsun mo Hitohada de Maruku naru?

From Sexy Akiba Detectives Translations:

When Kurisu comes to Japan again to see Okabe in the winter, it's no surprise she risks the cold to come and cuddle with the mad scientist in his lab - but what happens when Okarin's old fears and memories from the past about the fragility of human life come to the fore?!