クレイジー★ラビッツ 別れさせ業の兎桐事務所

The protagonist was an office lady working at an ordinary company... Until 3 months ago, that was.

One day, the company she worked at went bankrupt.
Not being able to find another job left her in dire straits. She got kicked out of her apartment and had to lodge at an Internet café. However, a poster advertising a job vacancy caught her eye. She thought to herself, "I don't have the luxury to pick and choose at the moment!" and went to the 2nd floor of an old live music bar as directed on the poster. In there was a small office littered with trash and covered in dust. 

She found out that the small office ran a professional "relationship ending" business from the dull middle-aged man that employed her. Though feeling uncertain about an industry she had never heard of until now, the protagonist made her first step towards becoming a "professional couple breaker".

This is a story about the protagonist that coincidentally came to help out the "couple breaking" business, their "extreme" clients and "strange" covert operatives who worked there.