My Scary Boss Is Showing Little Old Me What It's Like To Fall In Love -Every Night, With Passion-

Story :  The way he's using his long finger in her is making her body melt, and it's making her lose control!!
Miruku Usagi loves to eat and it's her appetite that made her ex dump her. She wants to get revenge by losing weight, but now she's gaining weight from eating too much diet food! She needs to get rid of her tummy if she wants to find new love! She joins a gym and finds Kenichi Inugami, the heir to the company she works at, waiting for her as her personal trainer!
She's fooled by his gentle smile when he tells her that he's looking forward to training with her. It turns out he's a relentless devil who pushes her to work harder, making her almost pass out!
But his strong arms... His chest glistening with sweat... his body looks like a chiseled marble statue, and Miruku can't take her eyes off of him. She's supposed to be concentrating on her training, but all she can think about is his gorgeous body!
Kenichi has noticed the way she's looking at him, and he's not letting it go. A man with such a lovely body is standing in front of her. How could she NOT look? He decides he's going to give her what she's asking for and Miruku can't resist!