Mashiba Kurumi works as a publicist for "el Arco Iris", an interior design company that is becoming popular with young people on social media. She's a fashionista who cares a lot about her appearance and about what others think. She works hard to gain the admiration of her coworkers and boss, Hayama Shogo. Kurumi is so busy with work that she forgets to renew her lease on her apartment. Her friend Koko helps her find a new place... but it's a share house with 3 strangers! There's Fujino Shun, a minimalist chef who just wants to live a simple life. Then there's Terai Haruto, Shun's cousin who works as an online counselor to help people with their problems. Finally, there's Hase Ayaka, an aspiring artist who makes contemporary art while working part-time as a delivery driver at a high-end supermarket. And so these people of different ages, occupations, and values come together under one roof. Though their personalities clash, Kurumi falls in love, deepens her friendships, and learns to take off her "armor" and live as herself.