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This creates a cocktail for some rather awkward scenarios and personalities that can rival even the most fanatical of male siscons. And, of course, the fact that they’re somewhat adorable – physically, makes their existence even more challenging to condemn. So for those in the mood for some rather conflicting taboo practitioners in anime, these brocons ought to put some boundaries in question.
7 Naomi Tanizaki (Bungou Stray Dogs)
In Bongou Stray Dogs there’s a couple who love to proclaim to all the other characters that they’re dating even though they’re siblings. The funny thing is, their actual blood tie is rather ambiguous or unconfirmed. So the viewers are left wondering whether it’s just some weird couple fetish or whether they actually live in sweet home Alabama.
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Naomi Tanizaki is the main proponent of this rather misguided union. She’s the one who keeps forcing herself upon her ambiguously “reluctant” onii-chan and can’t even wait until the two of them are inside their own room. Hence, most character interactions with Naomi and her brother are awkward and unsettling moments.
6 Sachi Umino (A Couple of Cuckoos)
Sachi Umino from A Couple of Cuckoos is secretly in love with her brother. That’s messed up, but at least she’s not blood-related with her brother, who was swapped at birth with Sachi’s true sibling. Still, what makes this siblinghood awkward is that Sachi’s foster brother, Nagi Umino, adamantly considers the former as his sister and nothing else.
Sachi knows this but still keeps her repressed and unrequited feelings burning with passion. The weird part is that Sachi has always liked Nagi but only admitted it to herself after she found out that they’re not related by blood; as if that revelation was her green light and invitation card.
5 Tomoko Kuroki (WataMote)
Tomoko Kuroki’s brother complex from WataMote isn’t as straightforward as others, and that’s what makes it complex and awkward. She’s a recluse whose social awkwardness is bordering on clinical; thankfully, her less socially awkward brother has agreed to help her in her goal of becoming the “popular girl” in school.
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Tomoko isn’t making that task easy, however, as she doesn’t know how to set some healthy boundaries with her brother. She even asked to see his privates as some kind of practice, and the only thing that kept the order after that proposal was her brother’s decent sense of normalcy. Regardless, Tomoko’s social awkwardness, even toward her brother, definitely generates some hint of romantic tension.
4 Shiba Miyuki (The Irregular at Magic High School)
The Irregular at Magic High School features a standard trope for anime where a beautiful pair of siblings could have dated anyone of their choosing, but they chose to stay intimate with each other instead. At least, that’s what keeps happening due to Shiba Miyuki’s whims and neuroticism towards her brother’s potential lovers.
Miyuki is so devoted to her brother that she’s even willing to “offer” her heart, body, and soul to him. She’s way too overprotective of her brother, Tatsuya, and often polices him on his whereabouts and who he hangs out with, like a vigilant mother. Ironically, she wants her brother to stay with her forever but also wants everyone to see her brother’s worth.
3 Aki Aoi (Aki Sora)
Aki Sora is a minefield of taboos since it’s not just an anime about sibling complexes but also a suggestive portrayal of a forbidden relationship between minors. The minors in question were Aki Aoi and her brother, Nami Aoi. It’s an anime that almost looks like a sitcom since their parents are seemingly absent, and their world is rather small.
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In any case, Nami Aoi already likes his sister romantically but is rather coy about it. Meanwhile, Aki doesn’t have any reservations or restrictions regarding her love. She makes advances on her younger brother and even controls their forbidden romance. Their friends even started worrying about their hidden relationship as they tried to skirt around the suspicions as they crossed several lines and boundaries.
2 Mitsuki Kanzaki (Recently, my sister is unusual)
Mitsuki Kanzaki’s case in Recently, my sister is unusual is a special one since, by technicality, it’s both a brother complex and it also isn’t. The whole chaos started happening after a dead girl’s ghost possessed Mitsuki. It just so happens that this ghost is head over heels for Mitsuki’s brother, Yuuya. Thus, the possessed Mitsuki started acting weird and touchy toward Yuuya.
In Yuuya’s eyes, this is a full-blown brother complex situation, but in Mitsuki’s perspective, it’s not since it’s the ghost’s doing. In hindsight, it also counts as a brother complex because one really can’t uncross that line, especially after some aggressive advances have been made, courtesy of the ghost.
1 Tachibana Sisters (Domestic Girlfriend)
This one’s a double whammy featuring a standard step-sibling story trope where their parents remarried, and they are now stuck under one roof. What’s different here is that there are two sisters vying for their stepbrother. One of them is the stepbrother’s teacher, and the other one is the stepbrother’s classmate. The additional twist is that the classmate hooked up with the stepbrother before they became family.
It even got to a point when the two sisters started catfighting and hissing at each other for that piece of protagonist meat, as if any other male who’s not related to them doesn’t exist. The anime is worth watching alone for that kind of romantic chaos.
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