Anime is full of romance, but not every love story is one worth rooting for. Some pairings leave fans scratching their heads, cringing at their screens, or even sparking heated debates online.
From toxic dynamics to downright bizarre matchups, these couples push the boundaries of what most people would consider a healthy relationship. Get ready, because some of these pairings are truly hard to believe.
1. Light Yagami and Misa Amane (Death Note)
Misa Amane worships Light Yagami with her whole heart, but he could not care less. Light sees her as nothing more than a useful tool in his plan to reshape the world.
He manipulates her emotions, keeps her in the dark, and never once treats her as a real partner.
Watching this pairing unfold in Death Note is genuinely uncomfortable. Misa deserved so much better than someone who only kept her around for convenience.
2. Sakura Haruno and Sasuke Uchiha (Naruto)
Sasuke tried to kill Sakura more than once, yet she still called him the love of her life. That alone makes this one of the most head-scratching romances in all of anime.
Fans spent years watching Sakura chase someone who insulted her, ignored her, and wanted her dead.
To be fair, Sasuke does eventually come around, but the road to get there is paved with so many red flags that it is almost impossible to count them all.
3. Goku and Chichi (Dragon Ball)
Their whole relationship started because young Goku had no idea what marriage even meant when he agreed to it. Years later, not much changed in terms of his priorities.
Goku consistently chooses training and fighting over being a present husband or father, leaving Chichi to handle everything alone.
Chichi’s frustration is completely understandable. She signed up for a husband and ended up with someone who treats saving the planet as a solo hobby with zero room for family time.
4. Sesshomaru and Rin (Inuyasha)
Sesshomaru first appeared in Rin’s life as a powerful protector, essentially filling the role of a guardian or father figure for the orphaned young girl. That history makes their eventual romantic pairing in later material feel deeply uncomfortable for a large portion of the fanbase.
The age gap and the nature of their original dynamic raise serious ethical questions. Many fans were genuinely shocked when the story shifted their relationship into romantic territory, and the debate around it has never really settled down.
5. Daida and Miranjo (Ranking of Kings)
Miranjo literally possessed Daida’s body and caused enormous suffering to him and his entire kingdom. The fact that Daida forgives her and then wants to marry her is one of the most jaw-dropping plot developments in recent anime memory.
Ranking of Kings is a genuinely touching show, but this pairing stretches the concept of forgiveness to an almost unbelievable degree. Most fans were left stunned, unsure whether to admire the story’s boldness or question the message it was sending about harmful relationships.
6. Yuno Gasai and Yukiteru Amano (The Future Diary)
Yuno Gasai is the textbook definition of a yandere character, and her relationship with Yuki is less of a romance and more of a hostage situation. She stalks him, manipulates him, and eliminates anyone she sees as a threat without hesitation.
Yuki spends most of the series terrified rather than in love. Future Diary is a wild ride, but it does a great job of showing exactly why obsession is never the same thing as affection, no matter how intensely someone claims to care.
7. Kaname Kuran and Yuki Cross (Vampire Knight)
Kaname spent years carefully shaping Yuki’s emotions and hiding the truth about her origins from her, all while positioning himself as her romantic ideal. When the full picture comes into focus, the relationship reads far more like grooming than genuine love.
The reveal that they are pureblood vampire relatives who plan to marry adds another uncomfortable layer entirely. Vampire Knight has a devoted fanbase, but even many fans admit this central romance is built on a foundation that does not hold up well under scrutiny.
8. Kouta and Lucy (Elfen Lied)
Lucy killed Kouta’s younger sister and his father before the events of the main story, which makes their eventual emotional reconnection one of the most complicated dynamics in anime. The tragedy between them never fully disappears, even as softer moments emerge.
Elfen Lied is not a cheerful show by any measure, and this pairing reflects that darkness perfectly. Their relationship is less about romance and more about two deeply broken people trying to exist in the same space without completely falling apart.
9. Daikichi Kawachi and Rin Kaga (Usagi Drop)
The anime version of Usagi Drop is genuinely sweet, following Daikichi as he steps up to raise his grandfather’s young daughter Rin as her guardian. Most fans adored that version of the story and found it heartwarming and responsible.
The manga, however, takes a sharp and deeply unsettling turn by making Rin and Daikichi a romantic couple as adults. The guardian-to-romantic-partner shift horrified a huge portion of readers and remains one of the most criticized endings in manga history.
10. Soubi Agatsuma and Ritsuka Aoyagi (Loveless)
Soubi openly declares his love for Ritsuka throughout Loveless without any apparent awareness of how inappropriate that is, given that Ritsuka is only twelve years old. The age gap alone makes the entire romantic framing of their relationship deeply troubling to most viewers.
Loveless has a cult following, and some fans focus on its themes of identity and loss. Still, the romantic dynamic between an adult and a child is something a large number of people find impossible to look past, regardless of the show’s other merits.
11. Yori and Iku Yuki (Boku wa Imouto ni Koi wo Suru)
The title of this manga and anime translates roughly to “I’m in Love with My Little Sister,” which makes the subject matter immediately clear. Yori and Iku are fraternal twins whose relationship crosses into deeply taboo territory that makes most viewers deeply uncomfortable.
Incest as a romantic theme in anime is controversial enough on its own, but twins make the dynamic feel even more unsettling. This one earns its spot on the list simply by existing, and it is not a pairing most fans bring up casually in conversation.
12. Melon and Daichi (Akikan!)
Akikan! takes a truly unique approach to romance by making one half of its central couple a literal soda can that transforms into a girl. Daichi drinks from the can, and Melon pops into existence as a human-like character with feelings for him.
The premise is so bizarre that it almost loops back around to being charming, but the romantic and suggestive elements between a person and what is essentially a beverage container raise eyebrows for obvious reasons. It is the kind of anime that makes you pause and ask, “How did this get approved?”
13. Seiji Yagiri and Mika Harima (Durarara!!!)
Mika Harima underwent surgery to make her face look like a severed head that Seiji was obsessed with, all in hopes that he would accept her. That level of self-erasure for someone who barely acknowledged her existence is genuinely chilling to witness.
Seiji eventually accepts Mika, but only because of her altered appearance rather than who she actually is. Their relationship is less a love story and more a disturbing portrait of obsession meeting conditional tolerance, wrapped in Durarara’s signature chaotic energy.
14. Kyosuke Kosaka and Kirino Kousaka (Oreimo)
Oreimo, short for Ore no Imouto ga Konnani Kawaii Wake ga Nai, builds an entire series around sibling tension before ultimately revealing that the two blood-related main characters want to marry each other. Fans were divided, to put it mildly.
Many viewers had hoped the show would steer away from its most controversial implication, but it leaned straight into it by the finale. Kyosuke and Kirino’s pairing is widely considered one of the most uncomfortable romantic resolutions in anime, and it still sparks arguments years after it aired.
15. Naoki Irie and Kotoko Aihara (ItaKiss)
Kotoko has been chasing Naoki since he publicly rejected her love letter in front of the whole school, which is a rough start to any romance by any standard. He spends most of the series being cold, dismissive, and sometimes outright cruel toward her.
ItaKiss frames this dynamic as endearing persistence meeting a tsundere personality, but many modern viewers read it differently. Naoki’s prolonged emotional cruelty combined with Kotoko’s relentless pursuit creates a pattern that looks more like emotional neglect dressed up as slow-burn romance.
16. Natsuo, Hina, and Rui (Domestic Girlfriend)
Domestic Girlfriend wastes no time throwing its protagonist into the most complicated family situation imaginable. Natsuo falls for his teacher Hina, sleeps with Rui after a chance meeting, and then discovers both women are about to become his stepsisters when their parents marry.
The show practically runs on scandalous plot twists, and the love triangle at its center keeps escalating in ways that defy belief. Whether you see it as guilty-pleasure drama or deeply irresponsible storytelling, there is no denying this setup is one of anime’s most chaotic romantic premises.
17. Choji Akimichi and Karui (Boruto)
When Boruto introduced the next generation of ninja kids, fans quickly noticed that Choji and Karui had somehow ended up married and had a daughter together. The reaction was mostly confusion, because these two barely interacted at all throughout the entire run of Naruto Shippuden.
No one is against the pairing exactly, but the complete absence of any buildup makes it feel like it came out of nowhere. It is the kind of relationship that works better as a background detail than a central story, because the groundwork simply was never laid.
18. Ichigo Kurosaki and Orihime Inoue (Bleach)
For years, a huge portion of the Bleach fanbase was convinced Ichigo and Rukia were endgame. Their bond ran deep, their dynamic was electric, and fans built an entire culture around rooting for them.
So when the final arc confirmed Ichigo ended up with Orihime, the internet had a lot to say.
Orihime is a sweet and genuinely caring character, and the pairing is not inherently bad. What made it feel jarring was how little romantic development it received on screen compared to the undeniable chemistry Ichigo shared with Rukia throughout the series.
19. Takumi Ichinose and Hachiko Komatsu (Nana)
Takumi is charming on the surface and absolutely exhausting underneath. He cheats on Hachi repeatedly, controls her decisions, and uses emotional pressure to keep her tied to him even when she wants out.
Watching their relationship unfold in Nana feels less like romance and more like a slow-motion disaster.
Hachi deserved someone who actually respected her, and the show seems aware of that fact. What makes Nana so powerful is that it never pretends Takumi is a good partner, even as Hachi stays.
That honesty is rare, and it hits hard.