Yosuke Chisaka

* Normal
* Coat

*"You’ll be mine for the rest of your days. For some reason you seem to forget this fact. All you can do is get comfortable and let me have you."*

## Physical description

### First Mentioned

Episode 1: Beginnings

Yosuke Chisaka is one of the main characters in The facility, acting as Ten's caretaker and doctor. Throughout the story, Ten slowly starts to learn about him and the inner workings of the Facility, while Yosuke in turn becomes more infatuated and obsessed with her.

## Appearance

Yosuke is usually seen sporting a white lab coat over a soft and dark blue long-sleeve shirt with a grey-patterned tie sticking out from under his collar. After Chapter 54, his tie is changed to a solid grey one.

Yosuke has been described as well-structured and handsome. His sharp yet gentle jawline glides smoothly from his chin, and his eyes are soft and olive-colored. Upon his nose is the thick rim of his rectangular-shaped glasses that frame and compliment the rest of his face. His hair extends outward and is somewhat medium cut, dark, and incredibly soft.

## Story

Not much is known of Yosuke before the events of the story. (To be updated)

## Personality

At a glance, Yosuke has a very mild, composed, and reserved disposition. Initially, he tends to act civil and polite with his colleagues. He does not usually resort to any physical violence when upset and instead tends to stay quiet in his fury, though he has been seen once or twice willing to act out against aggressors verbally. Only under dire circumstances does he react to anger physically, and even then, it is with mild violence.

Although Yosuke is capable of showing other ranges of emotions, he often tries to hide these behind a casual or straight-faced demeanor, as he doesn’t like being “read". He prefers to have the upper hand in conversations and any other situation, and so he hides away his true intentions or feelings behind a wall of quiet and thoughtful expressions.

Despite growing up in a financially comfortable background, Yosuke was raised in a demanding household and kept busy even from a young age. He is often described by the other doctors as being dry and flat in personality due to his work ethic. He is diligent in most everything he does, and often shows near-obsession with his work by putting it before his own health. Although Yosuke likely had friends or some semblance of a social life while growing up, Yosuke has referenced that his social skills suffered greatly over time once he devoted himself to a life of studying, and so he eventually detached himself from others entirely.

It is speculated by Gale that part of what lead to Yosuke’s obsessive attachment to Ten is that he had the opportunity to “let loose” and take control of his life after years of focusing on his work and abandoning most social interaction. At some point before his induction underground, he had been in a purely sexual relationship with Mom simply out of a want to add excitement to his life. However, Yosuke couldn’t put up with her clingy tendencies and wild mannerisms, and decided to end their fling.

During his visits with Ten, Yosuke has shown a dominant side, often wanting full control of Ten's mind and body, and often toying with her mentally in order to get her to do what he wants.

Yosuke has been shown in-story to know how to play the piano. He has dabbled in other interests during his younger years as well, such as baseball, but has neglected them during his adult years due to his work in the facility.

## Job at the Facility

Not much is clearly known about Yosuke’s position at the facility aside from him working exclusively aboveground. Due to him respecting his superior’s wishes to keep it a secret, he spends most of the story being vague about the topic, or ignoring it altogether. However, his position was more heavily discussed in Chapter 80 after his visit with Ten, once he decided to give her some sympathy and allowed her to know the truth about it.

It has been mentioned that Yosuke had been in school for a very long time (likely in biomedicine) and has acquired a lot of technical skills in his area of expertise. In the beginning, he started dabbling in multiple subjects and eventually tried his hand in working towards becoming a general practitioner. Sometime after that, he ultimately decided to go beyond that field of study which granted him the expertise and credentials for his current position. According to Yosuke, he worked aboveground for a while without questioning the work the company did, and was oblivious about the dealings underground.

Aboveground, Yosuke is something of a manager, in an administrative role. He oversees a lot of documentation and leads pharmaceutical labwork or research (at one point, he collaborated on a project alongside Mom). When he first started aboveground, he had work in a “basic position” exclusively in the labs, and worked with many cooperative teams. He was later promoted by his boss for his diligence and good work, and took on the administrative role he has during the story.

Part of Yosuke's responsibility beyond administration includes being his boss’ eyes and ears aboveground, reporting suspicious workers, emergencies and prying eyes. Ultimately, his position isn’t as intertwined to the Underground as his coworkers', but due to his referral from Mom and his proven diligence in his work, The Overseer had enlisted him to know of the underground operation.

Although Yosuke knows a lot more about the underground now, there are still many facets about The Overseers operation that remain mysterious to him. With the kind of dedicated man he is, Yosuke hardly finds being left in the dark an issue, and trusts his superior's judgement in these matters.

## Kinks and Sexuality

* Vanilla
* Abduction as seduction
* Impreg / Breeding/Ownership
* Rape
* Breast fetishism
* Bondage
* Gagging
* Clothed sex
* Underwear fetish
* Olfactophilia
* Cunnilingus
* Psychological (?)
* Discipline
* Helplessness
* Teasing

Pinpointing Yosuke's sexuality is somewhat complicated because of the kind of person he is and how varied his experiences have been. Because he tends to prefer girls and women and has been more openly intimate with the opposite sex, he's more heterosexual leaning. However, Yosuke has been shown as indifferent about being with members of the same sex, something we have learned when hearing him discuss his time with Eight. We’ve known he’s “tried out” most of the Numbers before, but he didn’t do it out of genuine sexual gratification. Rather, he was searching for what *would* satisfy and fit him. Other doctors seemed pretty firm on what they liked even before joining the facility, but Yosuke was still at a point where he wasn’t satisfied with most people.

Although he's been with males, Yosuke is not explicitly homosexual. It's possible his entire ordeal with Eight was based less in sexual desire, and more in narcissism due to the features the young man shares with the doctor. It’s pretty clear that Yosuke was never that interested in Eight sexually. Even if he might have been initially, he was very quick to ditch him. That’s why it might not be super clear with him.

Yosuke is *possibly* a heterosexual-leaning bisexual or just "heteroflexible". He’s someone who is open to certain homosexual relationships but ultimately leans far more in favor of women.

## Relationships

### **Eight**

Eight was Yosuke’s number before Ten. It’s not explicitly stated how long he had Eight for, but after Yosuke grew tired of Eight’s stubbornness and resistance, he had lost all interest in him and opted for another Number. Now that Yosuke has Ten, he has zero attachments to Eight and only discusses him when Ten brings him up.
Eight is also mistaken as a child or relative of Yosuke's due to similar messy hair style, green eye color, square rimmed glasses and otherwise serious personality. This, however, was debunked by the doctor early on. It's possible the similarity is just coincidence, or that Eight was chosen for him on purpose for that reason. Regardless, it's more than likely that Eight was not Yosuke's first choice.
Despite the lack of "sexual chemistry", Yosuke and Eight both have similar fascinations with the arts. Both he and Eight appreciate music, and exhume intelligence in learned subjects and musical expertise. It's something even Yosuke seemed to express fondness of in his previous Number, when he talked about it briefly with Ten in Chapter 48.
### **Cyrus**

Yosuke had no interest in Cyrus until he learned of Ten’s interactions with him and suspected her of having feelings for the Number. As he was made aware of Ten's interest in the young man, he began to pry and prod into the matter often, and adopted a view of Cyrus as an object of contempt, since his affection for her began interfering with Yosuke’s control of Ten. Yosuke's view of Cyrus gave readers a peek into his jealous tendencies, something that had been hardly seen prior.
### **Other Numbers**

Yosuke’s interactions with the other Numbers are rather limited due to him having no interest in them after “visiting” them once. He may have to refer to them for his work, or know of them from hearing his coworkers talk openly about their Numbers, but he has no personal connection to them. Only a few times has Yosuke really even referenced the rest of the group, and only a few times has he mentioned them by name.
### **Mom**

At some point before the story, Yosuke and Mom had collaborated a couple of times on a project and eventually "dated" for a couple of months. Yosuke has iterated that the relationship was purely sexual, and engaged in an effort to bring more excitement to his life.
While initially fascinated by the woman, Yosuke grew sick of her needy and overbearing nature, and ultimately decided to end their fling. In the present, Yosuke no longer has any attachments to Mom beyond professional. He's explicitly stated a dislike of her, and that he only keeps up with being civil and patient with her due to feeling like he owes her for bringing her into the underground operation, and consequently leading him to Ten. However, Mom still attaches herself to Yosuke and enjoys teasing and pecking at him. Their relationship seems very one-sided, with Mom fawning over the man.
Even with the myriad of interactions between the two through Ten's eyes, it's unclear whether Mom truly loves Yosuke, is dependent on him, or simply loves to tease him. All three are possible options given the sporadic nature she has. Nonetheless, she is always looking for him, and she always stops to chat with him when he comes by her office.
During the Ten’s confinement, Yosuke gave into Mom and slept with her after his grievances with the potential loss of his Number made him "go back to his old ways". Only once Ten returned to him did he immediately discard Mom again.
### **Lucius**

From the few interactions seen in story, it appears Lucius tends to peck at and tease Yosuke for his amusement, while also making sure that he does his work as expected when Yosuke starts to let his focus be mostly on Ten. Yosuke seems rather frustrated by the man's antics, especially when he understands the extent of Lucius' abuse toward Ten when she was confined away from him. Despite his distaste toward Lucius, he still shows him respect given that he's his [The Overseer|Boss']] right-hand man.
### **The Overseer**

Yosuke had known The Overseer aboveground as a “different” man than the cold and calculating personality he shows while underground. Their relationship is purely professional, and neither man has a personal connection to one another. Yosuke has been shown to trust in his superior's judgements, but does exhibit anger toward him after Ten's confinement, knowing that he hurt her. By this point, Yosuke's obsession with Ten was high enough for his emotions to be vehemently swayed by any jeopardy to her safety.
### **Parents**

His parents were fairly demanding, but Yosuke managed to pick up on a lot of different activities enough to satisfy them, some of which did bring him genuine joy. He had a fairly busy, fast-paced childhood that initially stressed him out since he wasn’t so used to the intensity that came with learning so many things so quickly, but he never wanted to be seen as lesser or get put down by his family, so he forced himself to adjust to the demand in lieu of being left behind. He did not utterly hate his family, but he did have poor opinions of them early on and he was relatively distant emotionally from them. He found value in what he did for the sake of it, rather than whether it pleased others.
## Visit Chapters

* Chapter 2: Visit Zero - Yosuke
* Chapter 6: Visit Two - Bedroom
* Chapter 14: Visit Six - Helpless
* Chapter 21: Visit Ten - Dearest
* Chapter 32: Visit Fifteen - Relief
* Chapter 36: Visit Seventeen - Rectify
* Chapter 44: Visit Twenty One - Discovered
* Chapter 49: Visit Twenty Three - Enamored
* Chapter 54: Visit Twenty Five - Power
* Chapter 70: Visit Twenty Eight - Resurgence
* Chapter 80: Visit Thirty Three - Affliction

## Trivia

*Most of these are pulled from asks featured on the author’s tumblr*

* Yosuke is likely an only child
* Of the doctors, Yosuke is the only one who works exclusively upstairs despite his awareness of the underground operation
* Yosuke's **Meyer Briggs type** is ISTP
* Yosuke's **intelligence type** (per original theory) is Logical - Mathematical
* Yosuke's **love language** is Physical Touch
* Yosuke is not the only doctor who can play an instrument, though he is probably the only one who kept up with his talent over the years.
* **Yosuke as a Parent:** *Yosuke is described to be loving, helpful, and comforting. However, he would eventually get busy with whatever work he has, which could make being present a bit hard depending on the situation*
* **How would Yosuke flirt:** *Yosuke would use charming words, delicate touches, flattery*
* Though he seems to like playing up traditional roles, Yosuke does know how to take care of himself as someone who has probably spent a lot of his time living alone. Provided he has the time, he probably cooks nice things for himself, and tends to his home to keep it clean and orderly
* **Yosuke’s triggers:** *Anything regarding Ten’s safety / Any instance of harsh belittlement or undermining*
* Yosuke's eye color is considered "uncommon" of people with Japanese lineage, so it's possible that he has some European lineage as well.
* **Yosuke's parent's opinion of him:** *They were hard on him and probably only cared that he succeeded and made them look good. So they were probably critical of him*
* **Yosuke's controversial opinion:** *Some women are lucky to be sought after without having to work so hard all the time, and should appreciate the attention/affection they get and comply with those who desire them*
* **Embarrassing fact:** *knows how to cook, but probably really, really sucks at baking*
* Yosuke likely prefer wines, brandy, or cognac
* Though he seems to like playing up traditional roles, Yosuke does know how to take care of himself as someone who has probably spent a lot of his time living alone. Provided he has the time, he probably cooks nice things for himself, and tends to his home to keep it clean and orderly

## Gallery

Number!Yosuke for funYosuke with MomYosuke carrying Ten in Chapter 1In Chapter 32Protecting Ten in Chapter 35Patching up Ten in Chapter 36Yosuke hovering over Ten in Chapter 44In Chapter 48Yosuke dancing with Mom in Ten's dream in Chapter 51: Closer
1. ↑ Descriptions taken from Chapter 1 of The Facility