Boys Love about a teenage boy who's asked by his twin sister to pretend to be her & confess to the school's most popular honor student on her behalf. Thinking that he would surely be rejected by her seemingly perfect & unapproachable crush he gathers his courage & confesses only to receive a shocking "yes" in response. Despite his inner turmoil the boy continues to pretend to be his sister and starts dating him. However one day the honor students learns the truth about his love confession. 双子の妹・綴実に頼まれ、彼女に成り代わって学校の人気者・神矢に告白することになった兄の世良千翔。 完璧でいけすかない神矢に妹は渡せないと、振られる気満々で挑むも告白の返事はまさかのOK。 動揺しつつも、妹のふりをしたままの千翔と神矢とのお付き合いが始まってしまう。 付き合いの中で神矢の意外な一面を知るたび少しずつ警戒を解いていく千翔だったが、神矢への告白は彼と妹によって仕組まれていたことを知り――!?