The story takes place at Shido Academy, a boarding school for boys, and centers on Hayama Takumi, a lonely and shy boy who suffers from an extreme phobia of human contact and can't stand being touched by others. During his second year of study, Takumi has to share his room with Saki "Gui" Giichi. Gui was raised overseas and is the school idol due to his outstanding academic performance and good looks. One day, Gui confesses to Takumi that he has been in love with him for some time. This truth unsettles Takumi, but however, he comes to realize the true sensitivity of Gui's personality.

★改編自暢銷500萬冊的BL經典小說《託生君系列》 ，原著連載30週年開啟的真人版電影新系列！

★執導多部《託生君系列》電影版的導演橫井健司，再次掀起BL粉絲"姨母笑"耽美熱議！

★本系列從2007-2012年共五部電影版，喚起一代人的回憶

★此片的全新BL組合，由矚目新人森下紫温飾演葉山託生，而在音樂劇《刀劍亂舞》中飾演山姥切國廣的加藤大悟則組CP搭檔演出，加藤更親自演唱電影主題曲「0%（Zero）」

在害怕與悸動之中，一段動人的青春愛戀即將展開…

在貴族男子寄宿學校就讀的高中生葉山託生，因原生家庭的陰影而害怕與人接觸，但自從偶然邂逅了關心他的同學崎義一並成為室友後，他們倆人之間將展開一段青春浪漫的校園愛情故事。