1.
Vampire Knight
Yuki Cross, the adopted daughter of the headmaster of Cross Academy, has grown up and become a "prefect" (also known as a guardian) for the school with two purposes: to protect the Day class students (humans) from the Night class students (vampires) and to protect the true identity of the Night class students from being discovered by the Day class students.
2.
Bleach
A shounen anime based on manga by Kubo Tite. Kurosaki Ichigo, a 15 year old student can see ghosts. One day, he meets Rukia, a Soul Reaper who's job is to destroy evil spirits called Hollows. Rukia encounters a strong Hollow and gets injured; she transfers her powers to Ichigo as that's her only chance to survive. He now must do the job of the death god, and protect Rukia from Soul Society's laws.
3.
Kyo Kara Maoh! (God! Save Our King)
Yuri Shibuya was living a pretty normal life. That changed the day he was dunked into a toilet after an attempt to save a classmate from a gang of bullies. Instead of just getting a good soaking, he's pulled in. The next thing he knows, he's in a world that vaguely resembles medieval Europe. If that's not odd enough, he's told that he is to be the next Maoh, just because he has black hair and black eyes. The Maoh is the King of the Mazoku, who are coexisting not-so-peacefully with the humans in...
4.
Ouran High School Host Club
Ouran High School Host Club is a club of attractive males who make $$ entertaining school girls. Haruhi gets mistaken for a guy because of the clothes she wears and the short hair, and joins the club to repay her debt she got by breaking an expensive vase.
5.
Fruits Basket
This is a cute anime about people who turn into animals. And nope, it is not like what you probably have in mind. This is kind of a drama/romance genre.
6.
Hunter x Hunter
A young boy named Gon searches for his father; during his journey, he becomes a strong fighter and a Hunter. This is a legendary anime and manga, one of most popular on Japan's Weekly Shonen Jump.
7.
Avatar: The Last Airbender
100 years before the start of the series, a 12-year-old Airbender Aang learns that he is the new Avatar of legendary power. Fearful of the responsibilities of having to stop an impending world war and to leave his mentor Monk Gyatso, Aang flees from home on his flying bison Appa. They crash into the ocean during a storm and Aang's Avatar state freezes them inside an iceberg.
8.
Claymore
Claymore are half-women, half-demons, named after their huge swords they use to hunt man-eating monsters.
********CLAYMORE is the very first serious anime season I watched**********
9.
Paradise Kiss
Yukari wants nothing more than to make her parents happy by studying hard and getting into a good college. One afternoon, however, she is kidnapped by a group of self-styled fashionistas calling themselves "Paradise Kiss." Yukari suddenly finds herself flung into the roller-coaster life of the fashion world, guided by George, art-snob extraordinaire. In a glamorous makeover of body, mind and soul, she is turned from a hapless bookworm into her friends22 own exclusive clothing model.
**********I really cried on this anime. It has that sweet, bitter ending**********
10.
*************If you hate Yaoi, then this is not the anime for you**************
JunJou Romantica
(Yaoi) Misaki is suddenly having some unexpected and odd problems. What started as a need for some college entrance exam tutoring has somehow led him to being romanced by a suave older man who also happens to be his big brother's best friend. Confused by all of his brand new emotions, Misaki struggles to deal with his suddenly very odd life. And if that wasn't enough, his suitor, Usami, has plenty of issues of his own. A man-child who decorates his room in giant teddy bears and toys,...
Based on your replies, I can send the list of my beloved Romance Anime list.