Introvert Tsubame Wants To Change

The story is about a university student, Tsubame Takashina, who has no presence, meets a boy, Taisei Kyogoku, and tries to overcome her negative attitude little by little.(https://www.pixiv.net/en/artworks/109457638) (Not included in the Pixiv Series Index)(https://www.melonbooks.co.jp/detail/detail.php?product_id=2005392)