I don't really know if they were trying to do this, but I think they went with the 'memory' kind of Anime. Like... Memories that you want to cherish forever. At least, I thought about that when I saw this Anime. They may be short, but it's sweet if you think that it is a memory from Nozomu and that we're watching it in third person what happened when he arrived at Hawaii. They may be written around boys, but I think it's more behind there like a hidden message for the viewers. I saw a message over friendship that wasn't restricted to age and /or country, but I also saw happiness and hard work where everyone helped. I'm sorry if my point doesn't get through or that you think this isn't right, but I think that that's the reason why they are short and cut off abrubtly.

I think they are Nozomu's memories when he begun the Café in Hawaii.

See ya!