渡辺くりすは高校教師。父の再婚でイギリス人のワタルが義弟になった。ワタルがくりすの高校に転入し、親子４人の生活がスタートした矢先、両親が事故死。くりすとワタルはふたりで暮らし始める。キュート系義兄とクール系義弟の新生活は！？ Chris Watanabe is a high-school teacher. When his father remarries, he finds himself with an English step-brother named Wataru. Wataru transfers to Chris' school, and just as the four of them are starting their new life together, their parents die in a plane crash. Now Chris and Wataru are living alone together. The elder is cute and the younger cool; what will their new life hold for them!? Related series : Brothers + (Sequel)