ㅤㅤYoon Daejung is four-years-older, Junsoo's childhood friend, ex-neighbor, and fiancé in denial. Junsoo usually calls him by Dae-hyung or Dae-hyung oppa when he tries to snatch his attention. Daejung's mother cherished Junsoo so much to an extent that she even asked her son to keep an eye on Junsoo and of course, take care of him, as he has a frail body which is extremely prone to any diseases. it is still heavily doubted whether Daejung himself enjoys on carrying out his mother's mandate, though, yet he does anyway.ㅤㅤone of Daejung's intent in moving to Tokyo is also to make sure that Junsoo lives a healthy life. Junsoo found himself easily annoyed if he's around Daejung, yet also magically feels comfortable and reassured over his very existence, leading him to tease Daejung a lot. Junsoo gets worried quickly if he catches a blunt sign of aversion, though, as he doesn't want to be hated by him.ㅤㅤin the end, Junsoo and Daejung finally confessed their love to each other. sadly, along with the absolute termination of their fiancés relationship, followed by Daejung's departure back to South Korea (end of storyline).@EXPERAIDE

ㅤㅤPark Bi-na is Park Junsoo's step little sister, his father's foster daughter. as an expert programmer, Junsoo's father decided to adopt the orphan so he could support Bi-na's interest and exceptional talent in technology. her current rather-unusual-name was also given by her foster father; it means "knowledge" in Hebrew origin.ㅤㅤBi-na didn't receive any formal education, yet Seoul National University acknowledged her competency and recruited her to become their research committee's navigator. by using her own method and abilities, the lass successfully found out about Junsoo's secret identity as the mysterious hacker Joker, and his Joker personality itself. yet instead of reporting her step-brother's doing to their parents or police, she 1000% supports him to continue, moreover, sharing her skills of hacking with Junsoo.@pumpkinlogy

ㅤㅤJung Chaewon and Park Junsoo met due to their same interest about K-Pop idol world as a fellow JYP stan and began to start their palsy-walsy senior — junior relationship then. Junsoo is secretly fond of people with bright aura, and she doesn't really mind Junsoo's antisocial attitude, so their friendship went pretty well, to an extent that he's willing to show his soft and weak side to Chaewon.ㅤㅤbeing close acquaintances from high school days, Junsoo considered her as his very first best friend—although public seemed to recognize them as sweethearts, they've never think of each other in a romantic way.ㅤㅤshe was also there when Junsoo struggled to recover from his first heartbreak. they've been spending moments together for years now—although being separated as Junsoo moved to Japan after his graduation. nonetheless, they still chat a lot and hang out quite often in every moment Junsoo drops a visit to his hometown.@heybaeragi

ㅤㅤGo Heejin is Park Junsoo's crush during the highschool days. his undeniable charisma made Junsoo swoon over him for two years before finally taking an action on confessing his longing. unfortunate enough, Junsoo was rejected in a rather cruel manner.ㅤㅤdriven by disappointment and resentment, Junsoo once used his hacking ability to attack and demolish Heejin's social media accounts; this marks the birth of his Joker personality. he didn't check everything after the dumping incident though, so he didn't really know whether Heejin had revived his accounts or not, or whether he had maintained his glory or not. however, Junsoo had already grown a sense of animosity towards bright people because of this.ㅤㅤJunsoo's parents divorced almost right after, and that month became the darkest age in Park Junsoo's history. he would therefore moved to Japan despite feeling devastated for leaving Chaewon and Bi-Na's side, whilst hoping he won't meet Go Heejin ever again (end of backstory).playable.

ㅤㅤJunsoo's lecturer at Tokyo University, who asked him to help assist a research project right after his graduation, until now. although he might seem unreliable, Junsoo found himself depending on this one particular sensei not only in his study or in getting a vacant space in the dormitory after graduating, but in terms of counseling as well. sensei's capability to stabilize Junsoo's (now pretty manageable) mental activity is the utmost thing that makes him hesitant to find a proper psychiatrist to ask for help. it's not like sensei is doing this on purpose, though―is there any teacher that wouldn't feel glad to be relied upon by their student, anyway?playable.

"My mom is very beautiful and a quirky social butterfly. I heard that she used to date all fine men around her back in her younger days, swiping them off their feet. That much of a powerful femme fatale (maybe because of this nature, she agreed―jokingly, I hope―to make Dae-hyung my fiance). Yet, she humbled herself and settled for a conservative and strict-mannered man way older than her, a Korean if that's not enough; my dad. Honestly, I can't quite comprehend why they decided to marry; was it because of the fateful meeting at Tokyo Game Show or something like that? Geeks. Not that I am not.Anyways . . . being that different, it's not surprising that in the end, they decided to part ways. They'd be happier like that. Mom can now freely get herself a man who can balance; is more affectionate towards her, and dad can fully support Bi-Na's dream as her one and only guardian. I, as an obedient child, shouldn't be an obstacle or whatsoever."non-playable.

Fuka Shiraishi, there was no better nominee to be Park Junsoo's ultimate gourmet buddy. having the same liking for foods and cooking, they quickly became good friends who raid the grocer and rule the kitchen together! Junsoo, being the splendid cook that he is, still looks up to the damsel to go to the next level. Junsoo cherishes Fuka as one of the closest acquaintances of his socially awkward self, being one of few people who was informed about his departure to the United States.@Echeveriann

ㅤㅤElla Mikhailovna Malikova and Park Junsoo, the Tom-and-Jerry of Kuma ga Daisuki. after being distant from his former home sweet home for some time, Junsoo decided to come back not only due to his love for his family, but also with consideration that the mansion would be a safe haven for Joker's activity. The Little Spider's there, after all! both hackers, despite their continuous mischief towards each other, would therefore become quite a duet when it comes to hacking. the fact that they're direct neighbors at the third floor also has a huge role in their frenemies chemistry, for sure!@thepauchok

ㅤㅤSera Sakaki was Park Junsoo's colleague at Tokyo University, as well as his close friend. sometimes like two peas in a pod, sometimes 180 degrees contradicting each other, Junsoo found comfort in Sera's presence―treating the lass in an unusually friendly manner and just becomes his own self on the process, almost like his family . . . or even female counterpart, that much of a mutual understanding. they met due to Sera's interest in Joker's activity, though this stayed as a huge mystery until they graduate from Tokyo University. maybe, still maybe, he'll confess about it in a near future?@gibelide

ㅤㅤWu Yi Xian was Park Junsoo's Taiwanese lover at some point in his college life. gentle and caring, pleasantly weird in his own way; only during this bittersweet time, Junsoo could completely forget thus numbing Joker's existence from society. whether it's for the good or bad, moments spent with him left a whole year in full tranquility. Xian's current whereabouts are unknown; leading Junsoo to assume that the poet has long gone. being his first official lover, Xian was quite a hard one to forget, but Junsoo promised himself to stop loving Wu Yi Xian by the time he reaches twenty three. this was because of Xian's birthday date : November 11th.@WODETlANA

Zacharias Arkady Chamberlain, the youngest of the Chamberlain, was troubled by an unknown hacker attacking his family when they met for the first time, marking the re-emergence of Joker. as Zacharias was the head of SIRIUS theatre his friend was working for, Junsoo decided to lend him a hand while he had sworn it was not because of any other reason. this reckless act, however, reached Sir Chamberlain, just as how Zacharias worried it would be, who later proposed a showdown resulting in Junsoo being forced to act as a private hacker supporting his shady business. wanting Junsoo to live a normal life, Zacharias always stood up to his father in order to protect him. he seems to have a soft spot for Junsoo, while Junsoo himself is still contemplating if he should befriend Zacharias and accept his kindness.@cal_amentum