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I, Maehara Maki, someone who couldn’t make any acquaintances or friends in high school, finally had someone I can hang out with outside of school. A girl. Her name was Asanagi-san. The boys in my class called her ‘The class’ second cutest girl’ behind her back. On Fridays, she would refuse her best friend, Amami, ‘the cutest girl in class’ invitation just to hang out in my house with me. Together, we played games, watched some movies, read some manga while eating junk foods like pizza and hamburgers, and chugging cola without a care in the world. To others, we may seem sloppy, but it was a precious, secret time together for Asanagi-san and myself.
"Huh? Who are you calling loser?" As the background of the class, I, Kazuhiko Nukumizu, witnessed a popular girl—Anna Yanami—getting rejected by another guy. "Even though he said we'll get married. Don't you think he's pretty mean?" "When did he say that?" "When we were 4 or 5 years old." That doesn't count, right? With this, the losing heroines like Remon Yakishio from the track and field club and Chika Komari from the literature club."Nukumizu-kun. There are two types of girls: childhood friends or cheating cats." "I see. Well, that's a bold statement." There's a fortune for those who shine only after losing. Losing heroines—the curtain to the mysterious coming-of-age story Makeine opens now!
The story revolves around Tsubaki Akira, who one day notices the anti-social transfer student Urabe Mikoto drooling on her desk while she is sleeping, and he tastes it. Eventually the two begin to date and get to know each other better.
The manga centers on Hana Tabata, a girl who constantly deprecates herself, considers herself ugly, and keeps only to herself. She spends her time taking care of the flowers that decorate her classroom — but is careful to do it only in the morning when nobody is around, as she is afraid of being laughed at for being an "uggo who takes care of pretty flowers." But one day, the class' most popular guy Ueno sees her taking care of the flowers.