Joshu Higashikata

Joshu is a 19 year-old college student and the third of Norisuke Higashikata IV's four children. Entitled, loud-mouthed and self-absorbed, Joshu is the archetypical spoiled teenager.

One of Joshu's most prominent traits is his general unpleasantness. He is rude and disrespectful to not only his regular entourage but also most people he interacts with. In general, Joshu is quite vulgar and regularly insults of disparages those he interacts with. Partly out of resentment, Joshu regularly bad-mouths Josuke and has at one point mocked him for not having a family. He also has a habit of bantering and playing pranks to his sister Hato. When Hato reveals her unattractive boyfriend, Tamaki Damo to her family, he immediately chuckles at the sight of Damo and also consistently acts rude to his guest. Finally when Kaato Higashikata revealed herself to her family, Joshu was hostile to her and made it a point to humiliate her by disassembling her clothes.[10] Yasuho notes that Joshu has poor social skills, which is at odds with his educational pursuit of social studies.

Joshu also has violent tendencies and is able to ignore the law for his own interests. For instance, Joshu drew a knife with the intent of using it against Josuke during a dispute after slapping him for seemingly stealing his money. He also stole Zaihei Nigatake's wallet when Nigatake left it on the counter and drew money from his bank account as a petty revenge, justifying it as Nigatake being "dumb enough to have an obvious credit card code".

Joshu is also very selfish and has a self-centered view of his world. His selfishness is showcased on several occasions, for instance when he complains that the center spot in the family photograph is taken from him by Josuke or that his room is given to him, only to be pacified when Norisuke compensates with money. When his father advises him to get a part-time job and provide for society, Joshu merely dismisses this and asks for money. His selfishness goes in pair with an incredibly self-serving view of the world. Joshu asserts that he has a sort of romantic relationship with Yasuho Hirose, calling her "[his] Yasuho" (at the same time ignoring the fact that Yasuho looks down on him and tries to get away from him at every occasion). He interprets Yasuho's gesture of giving him twice as many mochis as Josuke as a sign of her loving him "twice as much" and readily misinterprets Yasuho's words as a solicitation for sex. Moreover, when he finally notices the many instances in which Milagro Man's money gets him even more money, he easily dismisses it as him being lucky and even congratulating himself. In fact, he is midly arrogant and considers himself as someone on whom everybody counts. However, Joshu harbors some insecurities in private: acknowledging that he has no special talents or achievements, Joshu feels uncertain about his worth.

Joshu has shown to be superficial and spendthrift. After stealing money from Zaihei Nigatake, Joshu indulges in a shopping spree, wastefully spending it for things such as a luxurious wristwatch, buying nine seats at the movies just so he can sit alone in the center, or going to a hostess club flicking miscellaneous things into the women's chests, openly stating that he prefers women with large breasts. He also wastes money on merchandise of the idol Nanami Rena.

Joshu seems to easily distrust many people and organizations. He has stated a disbelief in God, that the prospect of flying in an airplane frightens him, and has a reluctance to drink or eat pancakes made with milk a day older than its printed expiration date, comparing it to crossing a rickety bridge. Likewise, he became highly suspicious of a value package of fish sausages, trying to record the length of said sausages to discover any foul play.

The only person Joshu has been shown to fully respect is Jobin Higashikata, his older brother. Joshu admires and praises Jobin's achievement and abilities, and is able to put up with Jobin's own jabs at him. He also has a roughly playful relationship with Hato. They share some bonding moments but most of their interactions are petty dispute and pranks. Joshu also interacts little with Daiya, acting more or less aloof toward her.