Watashi ga Motete Dousunda follows Kae Serinuma, a very kind second-year high school student and a devoted otaku whose favorite pastime is imagining the boys around her as BL pairings. A little known fact about Kae is that she is obsessed with Boy's Love and cannot help fantasizing about her male classmates falling for each other, while a more visible fact is that she is noticeably overweight.
One day, while watching her favorite show, Kae witnesses the death of her most beloved character. The loss leaves her utterly depressed, and she cannot bring herself to eat her meals or even attend school. After an entire week, she finally recovers, only to discover that something unusual has happened during the time she refused to leave her room: she has lost a large amount of weight and somehow become strikingly beautiful.
Suddenly catching the eye of everyone who sees her, Kae finds herself at the center of attention of four boys she has always known at her school. All four want to spend time with her, yet Kae would much rather see them fall in love with one another. As she tries to handle their pursuit, she must balance school life, unexpected popularity, and her own BL-obsessed fantasies without losing herself in the chaos.