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.

楢崎（砂川脩弥 饰）的心愿只是希望「有个可以安静看书的地方」，不料，某天却突然被迫接下看管校内出名不良学生‧寺岛（坪仓康晴 饰）的差事，必须和对方一起在放学后的图书室柜台值班。一开始连对话都没有的两人，在只听得到翻书声音的安静图书室内独处，渐渐地，楢崎开始对散发出独特氛围的寺岛产生了兴趣……

「UniteUp!」是由Sony Music献上的多次元偶像计画。 在突然开设的Youtube频道中，上传了形形色色的演出者丰富多元的歌曲。 从翻唱人气歌曲、公开「试唱」歌曲的「KIKUNOYU」、「EVAN」、「铃」， 以独立演出者身分发布具有高度音乐性之歌曲的「高尾大毅」、「二条瑛士郎」、「東郷楓雅」。 以自己作曲的歌曲为中心展现独一无二之歌声的「春贺」。 借由高水准的演出展现出压倒性之存在感的顶尖偶像「Anela」 由他们所共织出的歌曲及理念将会带来崭新的故事。