Looking for the Oneshot Shoujo Manga about a guy with split personality


I read a manga a while ago about a girl who fell in love with a guy whose
other darker personality appears at night. Later on, the girl and the dark
side fell in love with each other and the dark side got jealous that the girl
likes the other side of him more.

Can anyone identify what this manga is?




Out of the
[five](http://www.mangaupdates.com/series.html?category=Personality%20Change/s&filter=oneshots)
I've found, this one fits the closest:

**Blackberry**

> Ever since Fune Momohara was told that she was just like a "guy friend" by
> the boy she liked, she's been bent on becoming the ideal girl. But when she
> meets the perfect guy who turns out to be more than a little pretentious,
> she realizes that it can be difficult to keep up appearances!

