1. Deadman Wonderland

A dark and violent anime follows the sole survivor of the classroom massacres perpetrated by a mysterious man, Ganta. Framed as the carnage that has him locked in Deadman Wonderland, the most twisted prison ever built. In Deadman Wonderland, prisoners are forced to participate in brutal deathmatches for public entertainment, which is one of the ways in which prisoners sentenced to death are executed.

Ganta meets an unusual prisoner named Shiro, and they become friends in this prison. Later, Ganta discovers his strange ability to wield his spilled blood as a weapon, allowing him to bond with the killer. It's a horror anime mixed with action and, of course, romantic elements that involve Ganta's feelings for his classmate, Shiro.

2. Elfen Lied

 

The story of Elfen Lied centers on a new mutant species of human who resemble humans in appearance but possess psychic powers and small horns on their foreheads. Lucy is one of them, being experimented on at the Kamakura research center and managed to escape. Her injury led her to develop a secondary personality known as Nyuu, who acts like a child. This is when she met Kouta and his cousin Yuka and faced threats from the Special Assault Team to recapture her.

The Elfen Lied anime will offer strong character development and a captivating plot. The relationship between Kouichi and Nyuu, who is actually Lucy, grows over time, and we will witness love, loss, and acceptance in Elfen Lied.

3. Sankarea

 

The zombie waifu is real!!! Sankarea revolves around the relationship between Chihiro Furuya and a zombie girl named Sanka Rea. Rea, who ran away from home, couldn't commit suicide; instead, she drinks a poisonous flower that turns her into a zombie. Blended with comedy and horror, it balances humor, drama, and horror itself, creating a unique feel. Their love and struggle make the romance a powerful element of the story.

4. Another

 

Set in Yomiyama, a curse has plagued Class 3-3 of the city's North Middle School for many years. The curse causes a death streak for the class's students. Misaki, a popular student in Class 3-3, is said to have died suddenly on the way to school, and to this day, the teacher and students of Class 3-3 continue to act as if Misaki were still alive, leading to a strange presence.

The story begins when Kouichi Sakakibara transfers to Class 3-3, where he meets Mei Misaki, a mysterious and quiet student. A strange phenomenon begins to occur, in which students and their relatives begin to die in horrific ways. This phenomenon is linked to Misaki, who died in 1972 and led to the calamity that has struck nearly all of Class 3-3 since 1972. It is here that Kouichi and Mei Misaki set out to find a way to stop the curse.

Another is primarily a horror anime with some romantic elements in the story involving the protagonist, Kouichi Sakakibara, and Mei Misaki. But it's worth mentioning, as it will offer some interesting romantic interest in an anime full of suspense and tension.

5. Mirai Nikki

 

Future Diary is best known for its pink-haired yandere girl, Yuno Gasai, a girl obsessed with the main character, Amano Yukiteru. Future Diary's story centers on a deadly survival game to find the next god of time and space. Both Amano and Yuno will be involved in this game, where all participants receive a diary that can predict their future. Together with Yuno, they will fight for their lives and protect each other.

Romance is a central aspect of the series, as Yuno displays an obsessive love for Amano. Their relationship significantly impacts the character's development as the story progresses.

6. School Days

 

While not primarily a horror anime, School Days is a romance anime with dark and disturbing elements to the plot. Itou Makoto, a shy and insecure teenager, finally befriends two beautiful girls: Katsura Kotonoha, a girl he's romantically interested in, and Sekai, who offers to support his romantic life. This will be the first step in their love triangle, which takes a dark turn as Makoto's selfishness leads him to unexpected events. The show will explore the consequences of love, lust, and betrayal.

7. Tasogare Otome x Amnesia

 

A horror romance anime about a young girl left for dead in the old school building at Seikyou Academy. No one knows who she is or how she died. But the story goes that her wandering spirit still haunts the school to this day. This sparks the student's interest in the paranormal investigation club; what's even more frightening is that the club's founder is the ghost himself. Trapped between life and death, Yuuko becomes attached to Teiichi Niiya, a freshman who can see her. Together, they uncover many mysteries surrounding Seikyou Academy.

Dusk Maiden of Amnesia is clearly a horror romance anime where the show explores the supernatural phenomenon that happens in Seikyou Academy and emphasizes the romantic feeling between Niiya and Yuuko.

8. Gosick

 

A mystery romance anime set in 1920s Europe, where Japanese student Kazuya Kujo befriends a doll-like genius, Victorique de Blois. They explore the unsolved mysteries surrounding their school, including crime, politics, and the supernatural. While Gosick isn't a horror anime, horror fans should expect a dark and suspenseful storyline. The relationship between Victorique and Kazuya growing as deeply as the romantic element would make the series stand out.

9. Devil's Line

 

Devils Line explores the complex relationship between humans and vampires. The human is a college student, Tsukasa, who is rescued by the half-devil, Anzai, when she is attacked by a demon. As Anzai continues to protect her, the two struggle to maintain a relationship between these two different beings. While offering a romantic relationship, Devils Line also features intense action involving the dangerous creatures.

10. Blood+

 

A thrilling supernatural anime blended with romantic elements. Blood+ follows Saya, a girl with amnesia who discovers she's a powerful vampire hunter after a man gives her a katana sword. She later battles the ravenous immortals called chiropteran monsters, creatures capable of shapeshifting and disguising themselves as humans. The romantic element of Blood+ revolves around the relationship between Saya and her love interest, Haji, which adds depth to the story, despite not being primarily a romance anime.