If It's Love, Don't Fight It -At Night, This Perfect Gentleman Turns Wicked-

Mika isn't accustomed to romance, but then she meets the handsome cafe manager, Kyosuke. It's love at first sight, and she's been chasing after him ever since... Every day, he's curt and unrelentingly cold towards her. She likes those cool traits, too, though! Then, one night, after accidentally finding her way inside his house, an intoxicated Kyosuke pins her down! That night, the normally cold, classy gentleman suddenly turns naughty!! When he plays with her there... it feels so good she can barely even think...!

(Source: Renta!)