Ryo Fujihashi wakes up to her apartment burning. Trapped within a deadly blaze with no means of escape, Ryo frantically makes as much noise as possible to alert her neighbors. Fortunately, someone has called the fire department, and they are speedily able to rescue her.
In a strange twist of fate, one of the firefighters turns out to be her childhood friend, Soma Mizuno. Although she was once interested in him, her crush was short-lived due to Soma's infamous womanizing ways.
But with Ryo left homeless and all her possessions lost, Soma opens his home to her. Moving in with her childhood friend means Ryo has to build boundaries—physical ones—because to cross them means to jump straight into Soma's lustful arms. But due to his persistent interest in her, Ryo realizes he might just reignite the burning flames of passion between them.
Getting close with Soma, however, means constant interaction with the rest of the sexy, muscular fire department—and although Soma's heart is set on Ryo, can she stop hers from wandering?
Megumi is a work colleague and friend to Ryo. She is enthusiastic about work and has a wonderful personality. She also appreciates art, and is sometimes oblivious to what is going on around her.
Midori is Ryo's friend and work colleague. She has a bit of a spoiled temperament but always has Ryo's back. She also loves trying new types of coffee.
Ayako is a quiet and fun individual. She has a crush on Jun and is always in a good mood. She enjoys gardening and is always willing to lend a hand.