Hotaru works for a famous interior design company. It's a glamorous job, but Hotaru's private life is totally the opposite of glamorous. She lives alone, and when she isn't working, she's mostly lazing about her rented house in training wear. She's not interested in men. In fact, she isn't interested in anything. "I'd rather lay around than fool around," is her motto.
Her landlord is a bar owner, and one day, his