My junior at work is a cute, cheeky, but Rina girl. When we go out drinking, she complains about her boyfriend... I liked her. I can take better care of her than her boyfriend. That's why I secretly had high hopes for her. But when she questions me about our relationship and makes an unexpected proposal, I'm tormented by Kokoro of love and jealousy... A heartbreaking love story about a second boyfriend. *This work is a re-edited version of "I want you to call me only when I'm lonely, I'm going crazy" (product number: isd00002).