Is this your first time reading shoujo manga? Congratulations, this shoujo manga will tell you everything there is to know about every shoujo manga in existence. Meaning, it's a manga that tries to add as many cliches and tropes together as possible. Except it's not a parody, but takes itself seriously.
What a waste of my time. It's horrible.
Really, it wouldn't even be a spoiler to say 'childhood friend ends up with heroine', or 'love rival makes them jealous' or 'cries in every chapter' or 'I didn't want to tell you because I didn't want to hurt our friendship' or 'I will confess to her before you!' or 'OMG my love rivals have bigger breasts than me!' or 'Let's impress him with my yukata!' or 'Woops, I drowned, please give me CPR' or 'She's become cute lately, hasn't she?'. It. Won't. Stop. Puking. Out. Cliches.
It's a waste of paper and time, please look elsewhere for shoujo manga that is just a little bit more unique than this, or at least has characters with an actual personality.
The funny thing is, that the heroine's best friend, and the guy who has a crush on her (acting as a love rival for her childhood friend) have more of a personality than the main leads. All the heroine's got going for her is that she's an A-cupped idiot who cries every chapter (read: every shoujo heroine in existence). And all the love interest has got going for him is ... uh ... he got hot (I personally think his design is inconsistent and ugly). Yeah, uhm, that's it.
Waste of time, seriously.