If you were thinking of reading something not too serious, something lighthearted, Gekkan Shoujo Nozaki-kun is definitely the answer.
It’s funny as heck and I just can’t hold back my laughter every time I watched Gekkan Shoujo Nozaki-kun and I still laughed even though I know what’s going to happen. Well, I laugh rarely when I watch movies/animes so really, Gekkan Shoujo is a very great anime as well as manga.
The characters are just so ridiculous and anti-mainstream. My personal favorite is Kashima though. She is just so clueless and honest lol. So anyway, totally recommended!