When Midori arrives at school she notices that a childhood friend, Ryusuke Shibayama, is also in her class.

• 小绿转学就读的高中盛行各种恋爱占卜游戏，尤其是大家口耳相傅最神准的“十字路口占卜”，却因为占卜后大多招致不辛，使得“十字路口占卜”成为同学之间不能明说的禁忌游戏。