On his way to a dinner to meet his birth parents, he accidentally meets the brash, outspoken, Erika Amano, who is determined to make Nagi her fake boyfriend as she never wants to actually marry. But once Nagi makes it to dinner, he finds his parents have decided to resolve the hospital switch by conveniently having him marry the daughter his birth parents raised... who turns out to be none other than Erika herself!

    But when a chance encounter on a train leads to her meeting friend-of-a-friend and fellow student Itsuomi-san, her world starts to widen. But even though Itsuomi-kun can speak three languages, sign language isn't one of them. Can the two learn to communicate the budding feelings between them?

    But with friends like his, life is never going to be that tame.

    They call her “Yaya the cry-ya! Yaya the misfi-ya!” But no matter how badly they act, Yaya is just too naïve and trusting to believe the worst of her friends. Hard-rocking, butt-kicking Nana is just the girl to grab hold of Yaya’s timid demeanor and turn it upside down. Nana exposes Yaya’s “friends” as slime bags, doles out punishment, and does it all with style. Can there be anything that terminally shy Yaya and hyper-confident Nana have in common? Well, for one thing, they’re the same person. . . .

    But conventions are never what you expect and soon the whirlwind of events sweeps Christie off her feet and changes her life. Who is the mysterious cosplayer that won't even take off his sunglasses indoors? What do you do when you fall in love with a guy who is going to be miles away from you in just a couple of days?