This is a weird manga to say the least. The close up art style gives me big Death Note vibes (I wonder if the mangaka has some sort of connection to Takeshi Obata, maybe it just the influence). The tags indicate that this is a romcom but so far the chief protagonist hasn’t spoken a word, maybe that’s the gimmick you have a dizzy girl who spews whatever is on her mind and the stoic young man who says hardly a word and this is a romcom of how they become a couple.
Tentatively this is manga I’m gonna watch for now too see if it’s going to go somewhere and/or be translated outside the first chapter.