If you liked the Loveless anime, the Anime-Planet community thinks you'd like:
There are two worlds which exist side by side – the ordinary surface world of the humans and the secret world of ninjas called Nabari. Within this secret world, the opposing ninja groups are fighting over who should possess the ultimate power known as Shinra Banshou. Enter Miharu Rokujou, a high-school student who lives a carefree life and likes to keep himself to himself. Unfortunately for Miharu, his carefree life is about to be over, because within him is hidden the ultimate power and there is no end of evil minions ready to kidnap him for it! Miharu’s only chance of survival is to embrace this mystic world and become the King of Nabari himself. With the help of his new ninja friends, Kouichi, Shimizu, and Kumohira, can he come to grips with his powers or will he fall prey to his many enemies instead?
At first glance, Nabari no Ou and Loveless do not seem to have much in common but the way the characters develop is similar. In both we have a young male protagonist who starts out as being utterly indifferent to life and those around him, only to learn through trials how to connect with others and gain a purpose. The supernatural element and overall mysterious allure of one is also present in other. The plot convention of secret societies is explored in both anime but perhaps what really makes these two anime akin is the interaction between the lead and a character whose motives are somewhat dubious, in Nabari's case Yoite and in Loveless' case Soubi.
There are many similarities between the two main characters in both of these series. A younger, indifferent character and an older, broken character partner up in both of these series in order to achieve their ends.
Also both have shounen-ai, (though it is implicated rather than official in NnO), and both are fantasies set in the modern day.
Nabari no ou and Loveless has not a very similar story plot to each other. The thing that makes them very similar is the main characters point of view at live and how they suddenly start to enjoy life after meeting someone "special".
Miharu and Yoite in Nabari no Ou does not have a same sort of relasionship like Ritsuka and Soubi in loveless does. In loveless the relasionship is much shounen-ai while Miharu and Yoite is connedted in another way (kinda like brother/idole sort of way)
The very similar part is the development of the two main characters together.
Mira Munakata is a typical high school freshman; he goes to school, hangs out with friends, and has sex with his father. Ok, maybe not so typical. With the affections (and advances) of everyone from childhood friends to senior classmates, Mira has a wide selection of prospects to choose from; but the only one he really wants is his loving (literally) father Kousuke. So, when Kousuke stays out late and is rumored to be married to his beautiful co worker, what’s a boy to do but cry?
Shounen-ai edging on shota territory: in broad terms Loveless and Papa fit the description. Loveless steers away from the considerably more graphic nature of Papa; the former being much more appealing in terms of plot than the latter's raunchy take on boys' love. Even though the storylines differ extensively - Loveless is very serious and dramatic while Papa's approach is primarily comedic - the overt shounen-ai content establishes a connection between these titles apart from the bright character design.
Papa to Kiss in the Dark and Loveless are very similar in the way that they deal with the uke's doubts and worries about a possible rival. Loveless is much more developed from the story part than the other one, though.
Both animes are shounen-ai and involve a young boy and a older partner. Though Papa to Kiss has a lighter storyline, the drama in both should appeal to the same audience.
Hamura Shou is a young man who has been searching for his long lost younger brother named Kai since childhood. After transferring to an all-boys school, he manages to find him – but Kai denies it, and him in the process. Meanwhile, in the magical world of Winfield, the white-winged beings of the royal family have been killed and exiled, leaving the throne to its enemies. Through a series of events, the link between Earth and Winfield will be revealed – a link which will turn friends against each other, and cause tragedies to occur.
Loveless and Angel's Feather take a dramatic approach to shounen-ai mixed with magic. Both Angel's Feather and Loveless include supernatural battles and a growing romantic relationship between male characters. A very vibrant and elegant design pervades these anime as does the occasional feeling of fragmentation that makes one feel that the whole story is about to begin exactly when it comes to an end.
Both Angel's Feather and Loveless have a mysterious plot and involve a great deal of action. Both series also involve relationships between male characters, and the stories progress in an artful way with beautiful animation.
As Ito Keita looks at the envelope in his hand, he is both excited and worried. Inside is the renowned "Platinum Letter", an invitation to the most esteemed boys-only high school in the country: Bell Liberty. Only the very best students are considered for this special academy, and each must display an outstanding skill or talent to be admitted. So with average grades and no special skills to speak of, why is Keita now finding himself on the bus to Bell Liberty? Will he be able to find his place among the elite, or find out why the school chairman himself issued the invitation?
Both series are shounen ai and include all of the good things: bishounen (handsome guys) and romance. In both, a cute boy falls in love with a tall handsome guy (or the other way around) and you follow their difficult journey to be together. If you liked one of them, you'll surely like the other one as well.
This has exactly the same feel. The semeXuke set ups are basically the same. It's lighthearted yet serious. The character are pretty much the same just in different enviorments.
Albert de Morcerf had it all: wealth, loving parents, great friends. The only thing lacking in his life was excitement... until that fateful day on Luna. After a chance encounter with bandits and a daring rescue, Albert invites his newfound friend and savior, the Count of Monte Cristo, to his home in Paris. Little does he know what fate has in store for him and his loved ones. Just who is the mysterious Count, and what does he want? As tragedy touches the lives of those around him, can Albert’s only recourse be to wait and hope?
There's the slightest hint of shounen-ai in this series. Also, Loveless's French feeling and soundtrack have a similar sophisticated feeling to Gankutsuou. The animation is of the same quality as well. If you liked one, try the other.
Both of them have a unique scene, with colors and textures. gankutsuou is a bit more dramatic than Loveless and have a really intriguing plot, with family misteryous, just like Loveless.
Also there is possible shonen-ai hints between the main characters in both.
You should try it.