my lovely is Plump boy.

Kou Ryuugasaki is a cheerful, plus-sized high-schooler who’s hopelessly smitten on his popular upper-classman, Chiaki Hiiragi—who affectionately nicknames him “Oniku-chan.” Determined to close the distance between them, Kou vows to reinvent himself, embarking on a dramatic transformation that changes his life—and his appearance—completely. With a new look and newfound confidence, Kou steps back into Chiaki’s orbit, only to discover that their feelings might not be as one-sided as he once thought. But first impressions can be deceiving, and as the two begin to navigate the awkward, hilarious, and sometimes bittersweet maze of teenage affection, they’ll have to decide what—and who—they’re really looking for in a relationship. (Source: Ichijinsha, translated – synopsis edited to preserve story surprises)