Non non. MI is slice of life. it focuses on the daily life of Godai and Kyoko.
Potemayo deals mostly with everyday ordeals. Potemayo is thrown in there as a strange and interesting element, but the main point of the show is the relationship between characters.
The theme of 5cm isn't the romance, but the concurring reactions that show up in everyday life because of that romance.
And I forgot Planetes. Loved that too.