FSDSS-855 Co-worker BSS "I liked him first..." Suzu Nagano, a female employee with a crush on a promiscuous co-worker who became a convenient sex friend

Aoki graduated from university and got a job. While working with Nagano, who joined the company at the same time, he started to have a slight crush on her. However, being shy, Aoki was unsure even about going out to dinner and was unable to ask her out. They gradually got closer, and one day, he finally made up his mind to confess his feelings, but it turned out that another colleague, Kuroi, had already done so before him...