STARS-289 Hikari Aozora, a mischievous co-worker at my part-time job who seduces me with a smile while my girlfriend is away

I have a girlfriend, Mai, who is a college student who works at the same part-time job. Her best friend, Hikari, was also there at her part-time job, and the three of them got along well in private. One day, we decided to have a takoyaki party at the house where Mai and I live together. When Takopa was about to get all excited, Hikari, who loves mischief, asked me out and I ended up crossing the line.