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Subaru has silverish light-lavender whitish hair, making his hair color not dissimilar to his brother, Kanato's hair color, both being the "purple" family of tones and colors. He also portrays scarlet red eyes with a slight pinkish hue.
In Haunted Dark Bridal, he is usually seen wearing a black jacket with a red shirt underneath which has a brown belt around it. The ends of the red shirt appear to be ripped/shredded. He also wears black jeans and a necklace that is wrapped twice around his neck with a golden or bronze colored key on it.
In MORE,BLOOD, he wears a black jacket with a black shirt underneath. He also wears black pants and has a black sweater around his waist. He wears the necklace with this outfit as well.
His school uniform consists of the black school blazer with the sleeves rolled up to his elbow and a black shirt underneath that is ripped near the bottom and a white shirt underneath it which is longer and also ripped at the bottom. There is a small chain loop on the bottom left side of the jacket. He wears it with the standard uniform pants. He also wears white heeled boots. He wears a wrist band on his left arm. He wears the necklace with this as well.
Subaru can be described as the loner type. He is usually alone and never cares about what's happening around him. Subaru is the silent type who usually sleeps in a coffin, which is also inside his room. However, due to his very traumatic childhood, he is easily angered and resorts to violence quickly, going as far as to break everything when he gets extremely angered.
There is a tsundere side of him that not only Yui can see but also his brothers, and he usually gets teased about that by Laito. He's a delinquent type, kind of violent and loves to damage things. He's also a DO-S (extreme sadist), but despite all, can occasionally be sweet. His mother, Christa, described him as being gentle, even though she was the main reason for his horrible childhood and later for his lack of trust in females. He considers himself filthy and ignorant because of the ways his mentally ill mother had endlessly denounced him whilst either trying to kill him or begging him to kill her.
The reason Subaru gave Yui a knife is because he wanted her to kill him and then he said if she can't do it, she should kill herself.
Even though Christa knew very well what she is getting into, and that her "older brother" (her close blood relative Karlheinz whom she considers as a direct sibling, even though he's actually her cousin) already had two other wives, she preferred to self deceive and think that he only uses them and loves only her. Christa loving Karl as a brother, didn't decline the marriage even though her consent was never really required. But when she found out about Karlheinz wanting to use her for creating an incest born child between them for his experiments only, she started to struggle in between hating and loving him and became mentally ill. By that time she was already pregnant with Subaru which only made her condition more complicated. Christa became mentally ill and bipolar, at one side loving Kalrheinz as her "kind big brother" and at the other side hating him like "that man that dirtied her". She begins to hate the baby even before he is born as something impure that will ruin her beauty.
Because of this, Subaru's mother who is already extremely unstable put Subaru through the worst childhood. She calls him a filthy abomination and asks him to kill her and even tries to harm him to the point of even giving him a silver knife that can kill vampires. He grew up thinking that he’s filthy and unwanted. At first he thought it was all Karlheinz's fault that she is like this but when Subaru tried to protect her, Christa slapped him and ran into Karl's embrace which only shocked the poor child and left him with huge trust issues towards the females which he later shows to the heroine. Then he starts thinking it was all his fault for his mother to be that way and that the only one who she hates is him. With no one supporting him and telling him it’s not his fault, he vents his anger towards things which is why he is so destructive.
He first met his brothers at a dinner party which their seperate mothers brought them to. His first impression of his siblings was that he did not want to get involved with them.
At one point, Subaru broke a statue of his father and was thrown into the ocean as punishment.
Subaru doesn't seem so be to close to any of his brothers and tends to keep to himself however, he sometimes pesters and annoys his siblings as seen when Yui first arrives and he calls [[Kanato Sakamaki|Kanato]] a pipsqueak because of his height. Though in the CD Drama, Subaru did say he liked Kanato's singing.
Subaru finds Ayato calling himself 'ore-sama' annoying and repeatedly calls Laito out as being a pervent which Laito happily admits to. Subaru becomes frustrated by Laito's attempts to goad him into admitting his feelings for Yui.
Subaru's relationship with Christa is quite complicated. Subaru loves his mother, but Christa occasionally snaps at Subaru and begs him to kill her. She says Subaru was something she never wanted, calling him filthy, thus resulting in Subaru's bad opinion about himself. However, when he grows up his communication with her gets even worse. She often demands to see him and wreaks havoc only he can deal with. The moment she sees him she immediately mistakes him for Karlheinz and either hates him and throws heavy stuff at him, or loves him, calling him "big brother" and tries to push herself on him.
In one of his ending in Haunted Dark Bridal, she forces Subaru to kill her, and he does.
It shows that Subaru does have a deep hatred for his dad like his other half-brothers do. Subaru dreams to be the one to kill him one day. He can't forgive Karl for all that he has done to his mother, and especially for him neglecting her at the end when she needed him the most. Finding out about his experiments only adds more to that hatred.
Like all vampires, he has an inhuman strength as well as increased speed, increased vision and hearing, and smell. Being a vampire, he also has fast healing and healing saliva.
He appears to be capable of teleporting from nowhere in an instant.
During a full moon, he can fly.
Since he is a pure born vampire, he can only die if his head is cut off, however if his body is too damaged to heal fast enough it might also be life threatening even if not directly.
He is also able to use knives very efficiently, wielding it with high precision.
- His family name, "Sakamaki" can roughly be translated into Japanese as "Reverse winding" or "Reverse reverse", while the kanji spelling of his name Sakamaki (逆巻) can also be pronounced in spelling as "Sakama" in characters pronunciation.
- Subaru has no friends at school, meaning he's a loner.
- He doesn't have a favorite food or any hobbies.
- He is a tsundere
- He is left-handed.
- His foot size is 27cm.
- He got punished by being thrown into the sea when he destroyed a statue of his father.
- He considers Shu his favorite brother.
- He likes Kanato's singing.
- In DARK FATE, it is revealed that he is an incest child.
- In VANDEAD CARNIVAL Subaru Sub Scenario w/ Ayato, Ayato gives Subaru sour food and he doesn't taste anything.
|Sakamaki Brothers||Ayato Sakamaki • Kanato Sakamaki • Laito Sakamaki • Shu Sakamaki • Reiji Sakamaki • Subaru Sakamaki • Kino|
|Mukami Brothers||Ruki Mukami • Kou Mukami • Yuma Mukami • Azusa Mukami|
|Tsukinami Brothers||Carla Tsukinami • Shin Tsukinami|
|Others||Karlheinz • Beatrix • Cordelia • Christa • Richter • Seiji Komori|