18-year-old Hikari Tsutsui, a boy who loves the 2-D world, suddenly finds himself with a living, breathing, super-cute girlfriend named Iroha, and their relationship is going surprisingly well! “Is it really okay for someone like me who has only one friend to be this happy?!” he wonders. He gets jealous for the first time seeing Iroha with another guy, and he even makes a "female friend" … Tsuttsun feels like something bad is going to happen … and his bad feeling turns out to be right! The seeming social pariah of his generation, Tsuttsun’s endearing personality is making him a rising star!!