P2.5 LOVELOVE is a one-story doujin involving Yayoi and Ayaka.
The main only ? - interest of this doujin comes from the fact that the relations of these two characters are at the opposite of the series. Yayoi plays the role of the domineering girl in every sense of the word whereas Ayaka is meek and obedient.
The art is not very good and that is an euphemism. You can hardly recognize Yayoi but thanks to her hairstyle, glasses and uniform. As for Ayaka, well, you guess who she is because of the context, but certainly not because of the resemblance with the original character.
To conclude, P2.5 LOVELOVE is a rather poor doujin, hardly worth having even if you are a fan of the series.