Tokyo resident Keiko Furukara has never fit in - neither in her family, nor in school - but when at the age of 18 she begins working at the Hiiromachi branch of national convenience store chain Smile Mart, she realizes instantly that she has found her purpose in life. Delighted to be able to exist in a place where the rules of social interaction are crystal clear (many are laid out line-by-line in the store's manual), Keiko does her best to copy the dress, mannerisms, and mode of speech of her colleagues, playing the part of a "normal" person excellently, more or less.

In the turbulent summer of 1974, Kate Mularkey has accepted her place at the bottom of the eighth-grade social food chain. Then, to her amazement, the "coolest girl in the world" moves in across the street and wants to be her friend. Tully Hart seems to have it all - beauty, brains, ambition. On the surface they are as opposite as two people can be: Kate, doomed to be forever uncool, with a loving family who mortifies her at every turn.

I ran from home to escape heartbreak, only to deliver myself into the hands of a wolf. Henry Wolf, that is. Heir to a luxury hotel chain, infamous playboy, arrogant bastard...and my new boss. Why he wants me, Abbi Mitchell - a girl who lacks experience on every front that would matter to him - as his personal assistant, I cannot fathom, especially when I keep messing up in the most spectacular way. Did I already mention he's a bastard? A beautiful, moody one, who's quick to demand, slow to apologize. And toying with me every chance he gets.

Alex Volkov is a devil blessed with the face of an angel and cursed with a past he can't escape. Driven by a tragedy that has haunted him for most of his life, his ruthless pursuits for success and vengeance leave little room for matters of the heart. But when he's forced to look after his best friend's sister, he starts to feel something in his chest. Ava Chen is a free spirit trapped by nightmares of a childhood she can't remember. But despite her past, she's never stopped seeing the beauty in the world . . . including the heart beneath the icy exterior of a man she shouldn't want.

As a child, Natsuki doesn’t fit into her family. Her parents favor her sister, and her best friend is a plush toy hedgehog named Piyyut who has explained to her that he has come from the planet Popinpobopia on a special quest to help her save the Earth.