High schooler Tatara Tani only stands out because of how average he is—that is, until he starts (fake) dating the ultra-fashionable Ranko! The two of them can’t allow anyone to get the idea that Ranko’s twin sister, idol singer Yuriko, is romantically involved with Tatara, or she might lose her career! But as the fake dates pile up, Ranko’s true feelings begin to awaken. As Ranko and Tatara grow closer, Yuriko begins to panic… because if Ranko and Tatara fall in love for real, where will that leave her?! The comedic twists and turns continue as the twins’ love triangle begins to warp under the pressure!