Ren has always seen the world in gray. Quiet, distant, and friendless, he lives locked away in a corner where color doesn't exist... until he meets Hana, a girl who shines like the sun and reaches out to him without hesitation. From kindergarten through high school, Hana becomes the only constant in his life and a phrase he never forgets: "Take my hand." But just when Ren begins to see the world in color—and to understand how he feels about her—Hana must leave.