Koko wa Green Wood

Although 'Here is Greenwood' is a shoujo anime while 'Kimagure Orange Road' falls in the shounen genre, both are romance anime aimed at a teen aged audience. The characters in both are endearingly awkward when it comes to matters of the heart.  

If you ever think you are having a bad day I recomend picking up eith Maison Ikkoku or Here is Greenwood. Both portray the antics of a building of hoodlums who are constantly harassing the poor poor protagonist. In addition, they both posess a similar 'slice of life' humour.  

Both are comedies that focus on a group of boys and their "adventures" in high school.