Mako to Aki-chan no Koigokoro

Synopsis:

From Chibi Manga: This is the story about the best at swimming Mako and the careless Aki-chan. What will happen between them since they are completely different? Mako loves that womanizer of Aki-chan and then she confessed to him: "Please, let me become a special person for you". But isn't Mako a little bit too positive...?