Haru Yo Koi 1--94 END
That was a genuinely enjoyable seinen romance comedy. It starts out really interesting and you can really see how the main character has learned and developed throughout the course of the story. My main criticism is about halfway through the main heroine disappears so it becomes entirely focused on the main character and whatever new girls are there. The thing is none of the new girls were ever as interesting as the main heroine and so you can't help but hope for the main heroine to re-appear or wonder if she'll even come back at all, since time just keeps on progressing in the story. The ending was actually pretty good and I don't think it ran too long nor too short because in the end the main character really does take all his experiences and applies it to his decision in the ending.
Recommeded if you're looking for a solid seinen romance comedy with a side of ecchi scenes.
After this I'm checking out Smash!, by the same author which I hear is really good.