Yugi Tsukasa/Relationships

Yugi Amane
Tsukasa is Hanako's younger twin brother and the person that he killed.

While Hanako feels considerable guilt over killing him, Tsukasa doesn't seem to bear any ill will towards his brother for it, though he doesn't hesitate to use it as leverage to manipulate the latter. Whenever he encounters Tsukasa, Hanako becomes overwhelmed and has been shown to cry when Tsukasa begins to remind him of the murder he committed, and Tsukasa knows he can make Hanako vulnerable by simply bringing it up.

He's always eager to meet up with Hanako, greeting him with huge smiles and hugs when he does. He had told Hanako he loves him, and once asked him to play with him again, just like they used to. Once, when Mitsuba is trying to cope with the new powers he received after eating the former No. 3 and interferes with Tsukasa greeting his brother after they run into each other in the boundary, Tsukasa reacts with slight annoyance at being interrupted.

The twins seem to have been close since they were young and often did activities together, such as watching TV and going to festivals. They are shown to be holding hands in a commemorative photo taken upon entering junior high.

As supernaturals, Hanako and Tsukasa have opposing beliefs - Hanako maintains the correct relationships between humans and supernaturals, while Tsukasa thinks anyone should just be however they want to be. In a conversation with Nene, Tsukasa describes themselves as being polar opposites and compares their current relationship to that of rivals or arch-nemeses.

When alive and younger, Tsukasa used to bring gifts to Amane when he was sick. He cared quite a lot about his brother and seemed shocked when he found out that Amane was going to die.

When Amane miraculously got better on the twins 4th birthday, Tsukasa knocks his brother over during dinner and asks him if Amane loves him, which Amane responds to with a bright smile and says, "Of course I do!" Later, despite Amane saying this, Tsukasa in the Red House tells Kou that Amane hates him, showing that Tsukasa didn't seem to take Amane at his word.

It is later revealed that Tsukasa made a wish for Amane to get better. The wish required a sacrifice, and Tsukasa offered up himself, a sign of just how much he loves his older brother. Unfortunately, their relationship only went downhill from there when Tsukasa eventually returned from the Red House. According to Hanako, he's had trouble understanding Tsukasa ever since their 4th birthday, when Tsukasa had to disappear as a consequence of the price of Amane's wish to live.

During the School Festival arc, following an incident that destroyed the Big Clock located in The Sealed Auditorium that caused Hanako and Nene to be frozen in time while still keeping conscious, Tsukasa kisses Nene and kidnaps her. Hanako is shown to be very upset by this, as when Akane and Teru find him he is a blubbering, inconsolable mess that needs to be dragged to No. 1's boundary with them to save Nene.

Nanamine Sakura
Sakura made a contract with Tsukasa and has become bound to him; similar to Nene with Hanako. She treats him like a little child and would become exasperated if he does anything unnecessarily cruel. Despite this, she cannot disobey his wishes and still aids him in altering the supernatural's rumors. She acts as his assistant, broadcasting his altered rumors to the student body.

When conversing with Nene about him, Sakura says that Tsukasa never listens to her, his actions make no sense, and he has no sense of personal space. This is then shown by Tsukasa jumping onto Sakura excitedly in an uncomfortably close hug.

She then says that there is nothing she can do about it and that she decided to think of him more as a cat than a person. Tsukasa seems to hold some respect for Sakura and will alter his actions to a certain degree once reprimanded by her.

Hyuuga Natsuhiko
The two of them don't get along well except when it comes to following Sakura's commands or having to work together (eg. In the Tea Party Arc where Natsuhiko asks Nene out before Tsukasa dumps water on her from behind). Natsuhiko advises Tsukasa to be more gentle to girls, just as Sakura asked of Tsukasa as well.

Mitsuba Sousuke
Sometime after his death, Mitsuba made a wish to Tsukasa to not be forgotten by people, however, the wish was too unclear for him to be able to make anything but a weak supernatural form for Mitsuba, which he then used to haunt the school lockers in order to speak to his schoolmates.

After Mitsuba's real wish was drawn out thanks to his involvement with Kou, Tsukasa took advantage of the vagueness of the wish and twisted the rumors about him, turning him into "The Bent-Neck Boy at the School Entrance". This altered, monstrous form is more powerful but has also lost the humanity that Mitsuba once had.

In the Mirror Hell Arc, it was revealed that Tsukasa had created Mitsuba using an amalgamation of body parts he found as well as part of his original soul. This newly formed "Mitsuba" has the same personality but does not retain any of the original's memory. Tsukasa then gifted him with a brand new scarf that is dark red in color. Tsukasa appeared later to save Mitsuba when he was in danger from Number 3. He also pressured Mitsuba into consuming Number 3's heart in order to gain power, trying to force it down his throat at one point when the latter refused. He seems to view Mitsuba's new power with child-like fascination, attempting to rope him into fighting Hanako three times. However, in Mitsuba's fear of knives, he attempted to sneak away and refused to fight with Hanako.

Mitsuba is a vulnerable person and Tsukasa took advantage of that all throughout their scenes together, manipulating Mitsuba into being forced to trust him, distancing Mitsuba from Kou so that Kou would not be able to remind Mitsuba of their time they spent together with the gardening photos, and gave Mitsuba an illusion of choice. Mitsuba wanted to be alive so badly, and he thought that Tsukasa was the only way to do it.

Yashiro Nene
It is unsure of what Tsukasa actually thinks of Nene, but he seems to see her mostly as a tool to achieve his goals. Tsukasa has only interacted with Nene a few times, usually in the context of getting her to destroy the yorishiro. He indirectly got her to destroy No. 2's yorishiro by driving Yako insane through malicious rumors and forcing Hanako and her into action, he got Shijima Mei to create an elaborate fictional world for Yugi Amane and Mitsuba Sousuke that he sent Nene to and eventually lead to her destroying No. 4's yorishiro, he teleported her to No. 6's boundary to get her to rip off Sumire's yorishiro seal, and also stole her away to No. 1's boundary to destroy their yorishiro. Outside of getting her to destroy the yorishiro, he seems to have little interest in her.

In the Tea Party arc, where the Broadcasting Club kidnap Nene and send her to The Place That Is Everywhere And Nowhere, Tsukasa teases her by pretending to eat her while she's in fish form and makes advances when she says she hasn't kissed Amane. Otherwise, he appears to hold no ill will towards Nene, mostly seeing her as a source of amusement.

During the Hell of Mirrors arc, when Nene attempted to stop Tsukasa from forcing Mitsuba to eat No. 3's heart, he nearly slams her head against the floor before deciding against it. He then proceeds to apologize, saying that he's supposed to treat ladies nicely, before using his ability to press two fingers against someone's forehead and put them to sleep on her. Though Tsukasa refrains from hurting Nene, it only seems to be on the basis that she is a woman and he is a man, not because he particularly cares much if she herself is hurt.

In the Red House arc, Nene formed a bond with the 4 year old Tsukasa residing there, whom she carried around in her arms and treated very nicely. When Tsukasa discovered that Nene loved Amane he got really excited, remarking that she and him were just the same. Later, when Tsukasa didn't escape the Red House with them and couldn't be found, Nene tried her best to search for him but eventually had to give up. Tsukasa was grateful to Nene and Kou, however, and told them he was going to send them a letter when he got out.

During the School Festival arc, he kisses Nene on the lips while she's frozen in time before kidnapping her. Nene was notably quite confused by this behavior, but upon observing Tsukasa further, she determines he hadn't meant anything by it. This is also the first time Nene sees Tsukasa in any kind of romantic light, in which she hatches an elaborate fantasy about a taller, handsomer Tsukasa falling in love with her. However, instead of liking Tsukasa himself, she mostly seems to enjoy the drama of multiple boys falling in love with her (especially one who looks identical to the boy she has a crush on) and in reality is quite frightened by Tsukasa, who during the course of this arc once threatens to rip her arm off if she can't beat him in a game of tag.