Mod Note: This review was initially posted for the one-shot, Kuuki-chan to Yankee-kun, and was subsequently merged into Naisho ja Tarinai yo.
To be honest, the only reason I decided to read this one-shot was because it seemed to be a blatant rip off of Yoshikawa Miki's work, and I wanted to be proven wrong. The concept itself is nearly identical to Yamada and the Seven Witches (girl and misunderstood delinquent fall down the stairs and accidentally kiss, only to find they've switched bodies) and the title itself seems to be a direct reference to Yoshikawa's "Yankee-kun to Megane-chan".
That aside though, Kuuki-chan to Yankee-kun was mediocre
at best. Although a shoujo spin to this concept could have been interesting, it was not well suited for a one-shot story. The romance unveiled a little too quickly, even by shoujo standards, and the characters had little time to develop. For example, even though the title of the work implies that the main character's "lack of presence" is an important aspect to the story, there is zero development in this regard. The only way one would even be able to tell she lacks presence is from her opening comments about how she likes to blend in. The delinquent character is also just that: your typical manga delinquent who has a kinder heart than one would expect based on appearances.
The spin at the end was nice, but predictable. Although the plot wasn't awful, it would have greatly benefited from longer story where it could have better developed.