Midori by Moonlight — Wendy Nelson Tokunaga

Midori Saito's dream seems about to come true. Too independent for Japanese society, Midori is a young woman who has always felt like a stranger in her native land. So when she falls in love with Kevin, an American English teacher, she readily agrees to leave home and start a new life with him in San Francisco--as his
fiancee. Kevin seems to be the perfect man. That is, until he dumps her for his blonde ex-fiancee, whom Midori never even knew existed. Midori is left on her own, with just a smattering of fractured English, not much cash, and a fiancee visa set to expire in sixty days. Unable to face the humiliation of telling her parents she's been jilted, and not wanting to give up on her "American Dream," Midori realizes she's in for quite a challenge. Her only hope is her new acquaintance (and potential landlord) Shinji, a successful San Francisco graphic artist and amateur moon gazer who fled Japan after a family tragedy. And eventually, Midori surprises even herself as she proves she will do almost anything to hang on to her dream of a new life.