Ena, a high school student, is employed part-time as a housekeeper. Her landlord, Mikanagi-san, is a manga creator. Mikanagi, who is aloof and stylish, requests Ena to "teach me about high school girls" to assist him in crafting his manga. As part-timers, they enjoy taking purikura photos and visiting the beach together, but their bond appears to be slightly too intimate. "Is this just an extension of my part-time job? I'm feeling so anxious!" A charming, older, attractive man and his "I'll teach you how to be young" romance is on the verge of starting!