I've read all the chapters, and I could really say that I could actually give this an '8' or possibly a '9' if only the first story weren't in it...
Honestly, I agree with the other reviewer who dropped this manga because of the first story. It was really... horrible. The characters weren't explained very well, and at the end it's like "WTF? That's just it?" Heck, it didn't even bother to tell the readers why the guy liked the girl or if he really liked her. I'll give this a '3'
As for the second story, I think it has the best story out of all
the others, although there's not much romance in it. The story's great but the characters were... just good (I thought there was a deep story behind the character but there's not...) I'll give this one a '9'.
The third story felt like it lacked something, like it needed a continuation. I could say that this story had the best main characters (or character, I didn't really like the other girl). And this has no romance in it either, although if there was a continuation of this there might be...(As one girl was named "Yuri"... What else could it mean?). I'll give it a '9' too.
The fourth story was... cute but expected. It's nothing like a masterpiece, but no where near bad. Just your normal shoujo one-shot. I'll give it an '8'.
The last story's really sweet. I thought it would be as cliche as the synopsis said, but it wasn't... Although it's nothing special. I'll give it an '8'.
Long story short, don't read the first story -unless you're okay with a 14 year old doing it, iykwim.