I am unsure how many people know of this anime, but Kimi to Boku~?
A very relaxed, slice of life anime.
I like to say it's the very down to earth Ouran highschool club version, without the host club of course. I mean, they literally have almost the same characters. Twins, a guy with glasses, over hysterical blonde who isn't Japanese (this guy is German, not French), and the red haired boy is always mistaken as a girl. XD
But that's the only simiarity. For instance, the twins Yuuki & Yuuta are completely different to Hikaru, and Karou. Yuuta (NOT the one wearing the beige jacket) is the oldest, and sometimes likes messing with their friends, but he is more mature; and hopes to see his younger brother Yuuki to push himself and be not as lazy.
And each character has their own problems, and their unique episodes. And I love each of them equally.
We also get a lot of cat imagery, which represents specific characters in each episode.
Sadly, there's only two seasons, and I wish there were more.
There is manga~ sadly the physical manga is only in Japanese (I weep~) but you can find it online, and there's SO many more that we get in the manga that we need for the anime. The anime is also only in Japanese too.
I wish there were more fanfics too ;_:
Anyways, not known or not, I hope more people will love the characters as much as I do. And either watch or read it~