Eiko is pushing thirty, but has never once had a boyfriend. She’s always been fully contented with living the single life and immersing herself in her passion for video games…that is, until she met Koigakubo-kun, her extroverted younger coworker who’s got a silver tongue. After a night of drunken connection, he ends up becoming her romance guru! But as their lessons progress, they start to fall for each other. Koigakubo-kun professes his feelings for her, and before she knows it, they’re a couple. After deciding to continue their lessons as a couple, the two are faced with brand new challenges: first a house date, then a couples’ vacation?!