Lindo and Ritsuka Tachibana grew up together as siblings. Ever since childhood, Lindo has strived to protect his little sister Ritsuka from harm, be it vampire, devil or anything else. He will even team up with an enemy if that is what is called for to keep Ritsuka safe. When her mother is kidnapped and strange things start to happen, Ritsuka immediately calls on her big brother to come and help and he arrives as soon as possible to be by her side and protect her. Lindo’s love for her is so strong he confesses he couldn’t go on if anything were to happen to her.

Ritsuka trusts and loves Lindo unconditionally, as she proves when she embraces him after he slashes her cheek while in a rage. She also accepts everything about him when he tells her all the secrets that had been kept from her for the last 17 years. Though technically Lindo and Ritsuka are later shown to be cousins and not siblings, they grew up as such and as far as Ritsuka knew, that was their relationship. Their connection is based on love, protecting those you hold dear and trusting family, so we thought they deserved a place on our list.

Junichiro Kagami is a super intelligent NEET until his little sister Suzune forces him to get a job as a teacher. While Suzune is bossy and beats Junichiro often, she didn’t make him get a job just to be mean. She sincerely cares about him and his future and feels that he should be doing something with his life. Suzune acts more like Junichiro’s mother than his sister in that sense. She disciplines him, makes him get up in the morning and worries about him when he goes missing.

When Junichiro ends up teaching at Suzune’s school and he comes up with his crazy lesson plans, Suzune always – though mostly reluctantly – joins in, helps or supports her big brother in some way. Like other siblings on the list, these two live on their own and as such they take good care of each other. Suzune is always pushing Junichiro to put his potential to good use, and if anything happened to her, Junichiro would be the first to jump into action despite his usually lax nature. Without Suzune, Junichiro wouldn’t be who he is, and Suzune learns a lot from her brother’s “lessons”.

Ikki Kurogane and Shizuku are members of a family that is well known for producing strong Blazers. However, Ikki is the weakest and is abandoned by his family. Shizuku and her big brother were very close growing up and she’s always loved him. So when Ikki is kicked out of the Kurogane household, Shizuku began to resent her family for their unfair treatment of her brother and for having separated her from him. After that, she becomes a bit obsessed with giving Ikki all of the love she can as a sister, parent, friend and lover (eek!).

While Ikki is a little disturbed by Shizuku’s way of showing her affection, he loves her as well. As his sister. After she comes to terms with the fact that she can’t show her love in a romantic way, and that Ikki now has those who love him, she chooses to continue to support her brother in a more sisterly way. Ikki believes in Shizuku’s strength and is her proud supporter, just as Shizuku believes in him and worries when he is confronted by a powerful opponent. While a little weird at first, this relationship between siblings is that of admiration, respect and love. We couldn’t leave them out.

Misaki and Haruka Sakurada are the twins in the large Sakurada royal family. As such, they have a very close bond. Haruka and Misaki share a room; they spend a lot of time together and talk a lot. They are closer with each other than with any of the other siblings. Haruka helps Misaki in her campaign to become king instead of attempting to be king himself.

Misaki tends to get depressed because she considers her clones to be more useful and talented than she is and she even questions why she wants to become king. However, Haruka always manages to bring her out of her funk and motivate her. Because of his unconditional support, Misaki says she needs Haruka by her side and she wants to be the best for him. This is another sweet, supportive sibling relationship we couldn’t leave out!

Hajime Tsunashi and his crossdressing brother Youta, who draws yaoi under the name Mayotama, are both hardcore otaku. But it wasn’t always like that. Mayotama has always been very feminine and Hajime has always been into anime. They actually didn’t get along at all until Hajime stood up to some bullies that were picking on his little brother for being girly. They both got beat up, and ever since then, Mayotama has had a deep admiration and love for Hajime and even became immersed in his anime world. So much so that he now uses Hajime as his main character in his yaoi dojinshi!

Hajime and Mayotama spend a good amount of time together. Mayotama comes to his brother for support and advice and Hajime goes to see him at Comiket and is generally interested in his life as his older brother. Hajime even helps him out with his love interest! No matter how awkward or weird the situation, these two brothers stick by each other and support each other no matter what. They are a wonderful example of otaku brotherly love!

Another pair of twins! Takumi and Isami Aldini grew up in Italy and have worked in their family’s restaurant since childhood. Takumi is blond and brash and Isami is a calm brunette. What they have in common though, is their love and passion for cooking. Takumi is a much better chef than Isami which has fueled a healthy sibling rivalry in which Takumi always comes out on top.

Though being stuck as number two has given Isami a bit of an inferiority complex, he is reassured by Takumi when he tells him that he needs him in order to be the best chef that he can be. This encourages Isami to continue to improve so he can be the best support possible for his brother. And if anyone ever insults Isami, Takumi will step up and defend him no matter who they are.

The Aldinis have a very healthy competitive / supportive relationship. They constantly strive to improve together to fulfil their dream of making Trattoria Aldini the best in Italy. These brothers took a rivalry that could’ve gone wrong and built a strong sibling relationship from it, that’s reason enough for them to make this list.

Yuu and Ayumi Otosaka lost their parents at a young age so they only have each other in this world and they love and care for each other to an almost unbearable extent. Even though Ayumi is the youngest, she takes care of Yuu like a mother. She makes sure to get up early in the morning to make him breakfast and lunch, both of which she adds pizza sauce to because it reminds Yuu of their mom’s cooking. And even though Yuu is sick and tired of pizza sauce flavored everything, he would never break his little sister’s heart by saying something.

Ayumi also worries about Yuu when he’s out late working with the student council, much like a mother would. When disaster strikes and something terrible happens to Ayumi, the unbearable heartache puts Yuu in a deep, dark depression that first keeps him locked in for weeks and then seems to transform him into something almost evil. The love between Ayumi and Yuu and the extents they go to show it is definitely one to remember from 2015.

This is another one of the tragic sibling relationships from 2015. Mikaela (Mika) and Yuuichirou (Yuu) both had rough childhoods and were then raised in an orphanage where they became very close. While being kept as livestock by the vampires Mika and Yuu were the closest among the kids and took care of them. Mika risks his life for a chance to get his family out of the vampire’s clutches and even becomes Ferid Bathroy’s regular meal.

After a failed escape attempt, all the siblings are murdered except for Yuu and Mika, who is fatally wounded. Yuu escapes believing left his brother Mika to die and vows to take vengeance for his life. Mika, however, survived by being turned into a vampire and endures a painful life as one with the sole purpose of finding Yuu and getting his brother back.

Everything these boys do, from becoming stronger and enduring torture, to constantly risking their lives, they do to find each other and put the first family they’ve ever known back together again.

The sibling relationship between Umaru and Taihei seems like one of the most natural ones in anime. Taihei is straight-laced and very responsible. Umaru, on the other hand, is lazy and never does any chores. And, like any good younger sibling, she knows exactly how to annoy and manipulate Taihei.

Even though Taihei is often upset at Umaru for her irresponsible behavior, he still loves her and spoils her and lets her get away with things. He even plays along so her secret personality won’t be discovered by outsiders! And while Umaru loves manipulating Taihei to get what she wants, she usually comes clean about it or does something to make up for being a little brat.

It’s also hilarious to see them silently battle it out when in public and Taihei takes advantage of the fact that Umaru can’t be herself and throw a tantrum to manipulate him. These two know how to push each other’s buttons but they also truly care for each other. They’re some of the most entertaining siblings of 2015!

There were a lot of twins in anime this year! Having been raised by their older brother Izaya, Kururi and Mairu Orihara are far from normal twins. They have decided to embody humanity between the two of them by making up for each other’s flaws and lacks. They chose their personalities and appearances based of a coin flip which ended up with their looks clashing completely with the way they act.

Mairu is loud, aggressive and reads adult magazines in public but wears conservative clothes, while Kururi is quiet and reserved but wears showier outfits. They literally complete each other, both embodying completely opposite traits.

They are always together and their sisterly love is such that it sometimes seems incestuous. To the point that Kururi needs to remind her sister to tone it down when they’re in public. They are so close that they consider themselves a unit and make every decision together. Though a little twisted, you can’t get any closer as siblings than these girls!