This manga includes some one shots related to each other. The characters are from the same girls-school, and most of the relationships are unrequited ones. In the first story, you feel like you are actually reading a shoujo manga, because one of the character looks like a boy and at the some point it may make you "not want to read". But it's actually not like that, you should keep going if its just for the artwork. Btw, if you are reading this manga because of the "yuri" tag, don't expect too much. This is actually a shoujo-ai manga.