Opening "世界の果てに君がいても" (Sekai no Hate ni Kimi ga Itemo) by Shuhei Kita .
Originally aired in late 2011; available in premium DVD sets . Storyline Structure Sekai Ichi Hatsukoi 2
The series follows four main "cases," each focusing on a different couple within or connected to the Marukawa Shoten publishing house: Sekai Ichi Hatsukoi 2