I Was a 'Secret Bitch' (2019)

Hiromi flirts with men and is easy. She is nothing special to look at, but men go for it because she is there and available. However, like any female as soon as the man is hooked she drops him. This is what is known as a 'kakure bicci.' However, the cold and shameless flirt finds herself in an unfamiliar situation one day. She genuinely likes a man.