This series began as a web comic, which can be read here: https://dynasty-scans.com/series/tadokoro_san_web_comic

Shy and introverted, Tadokoro Kageko passes her free time in class drawing instead of hanging out with her classmates. But even when her classmates approach her, it’s only to make fun of her drawings and appearance. In stark contrast, Nikaidou Sakurako is well-liked among her peers as she has both beauty and smarts. And while everyone makes fun of Tadokoro, Nikaidou on the other hand, is totally infatuated with her. Just one look at one of Tadokoro’s drawings and Nikaidou fell in love with the art and eventually, the artist herself. When Tadokoro offers to draw Nikaidou a portrait, Nikaidou becomes ecstatic as this may be her chance to get closer with the girl she has been obsessing over.