BUTTERFLIES, FLOWERS (Cho yo Hana yo), by Yuki Yoshihara. First published in 2006 and first published in North America in 2009.
PLOT:
Choko Kuze is the daughter of an old-money family that's fallen on hard times. They've lost their fortune, their mansion, and even their servants, and Choko is the only one willing to support them by taking on an office job at a notable real-estate agency. She could have never expected that boss who harasses her with awkward questions and tyrannical demands was also her family's former butler. Domoto has never forgotten her family's kindness nor the little girl he used to protect, and when he's off the clock he reverts to the fond, deferential young man he once was. Can Choko learn to look past Domoto's harshness to the sweet man within or will she always be stymied by his hot-and-cold treatment?
