Yubisaki kara Honki no Netsujou: Osananajimi wa Shouboushi Season 1

Ryou is minding her own business after a night out with her firefighter friends and ends up getting caught in a fire herself. At the last moment she is saved by none other than her friends and is invited over to one of their houses. One thing leads to another and they end up being a little more than "friends".