Kao ga Nai Onnanoko

Her boyfriend thinks she's the cutest girl around, but her expressions can be a bit hard to read... Despite the miscommunications, there's one thing that always comes across—their love for each other.
(Source: Yen Press)
Note: Originally a a web manga released on the author's Twitter and pixiv accounts, it was published in print by Kadokawa on December 12, 2019.