Katakoi Drops

Yui is an ordinary girl who is close friends with Sanae and Taishi, both of whom are popular in their own ways. Sanae is cheerful, attractive, and well-liked by boys, while Taishi is a top athlete and kind to girls, making him popular among them. Yui has long had feelings for Taishi but kept them hidden to preserve the trio's bond. When Sanae confesses her love for Taishi, Yui promises to support their relationship, though this leads to unexpected developments.