Despite it's simple and cliché plot (a promise between friends, [probably] a love triangle, etc) it's really well done. It gave me a sweet, fuzzy feeling when I watched it. The soundtrack is really great and fits the atmosphere of the OVA very well. The OVA itself isn't appealing and outstanding, but does a good job when it comes to entertainment and enjoyment. Don't expect something deep full of drama and development of story/characters. It's short, simple and very enjoyable.