Mai Zenin

Mai Zenin is a character in Jujutsu Kaisen. She is a second-year at Kyoto Metropolitan Curse Technical College.

Appearance
Mai has mid-length black hair that reaches to her neck. She has dark eyes and thin eye brows as well. Her school uniform consists of the traditional long-sleeved jacked and a long skirt with dark shoes.

While training, Mai wore a long sleeve track suit with black sleeves and shoulders, and a white body, and black pants. As a child, Mai wore a dark kimono with a black sash. Mai casually wears a black sleeveless high collar shirt, with a black long skirt, and black shoes.

Personality
Mai is a very crude and straightforward person who takes out desire not to be a Sorcerer on others. Upon meeting Nobara and Megumi, she insulted them and their dead friend just for the sake of the school rivalry. She's also always outright when calling her sister useless and weak.

This scowling attitude comes from Mai's desire to live a normal life. Mai and her sister were both raised in the Zenin household, looked down upon for being women and for possessing little Cursed Energy. While Mai was content living there, Maki decided to leave and become a Sorcerer, breaking her promise to always stay with Mai. To avoid any backlash from the Zenin Family, Mai is left with no choice but to attempt to become a Sorcerer as well.

Mai resents Maki for breaking her promise and she has an attitude toward most people in general because of her life. When it comes to classmates such as Kasumi and Momo, Mai is actually quite kind and has a close relationship with them. Her other classmates believe she's taken after Aoi's crazed and aggressive personality.

History
Mai was born in the Zenin Clan, as the younger twin sister of Maki. As a child, Mai always relied on Maki since she was afraid of Cursed Spirits. Later in life when Maki left the clan, Mai began to resent Maki for leaving her.

Disaster Curse Arc
Mai accompanies principal Yoshinobu, along with Aoi, to the Tokyo College. After arrive at Tokyo, Mai along with Aoi meets up with Megumi and Nobara. As Megumi wonders what they are here, which Mai says that she came to because she was worried for them since their classmate had just died. Mai then starts to insult Yuji and how Megumi must be relieved that Yuji is dead.

When Aoi starts to fight with Megumi, Mai stops Nobara from helping Megumi. Nobara insults Mai about her looks, which Mai gets angry and shoots Nobara multiple times with rubber bullets. Suddenly Maki shows up and distracts Mai long enough for Nobara to put Mai in a choke hold. Aoi shows up and says that they are leaving, which Nobara lets Mai go. As Mai leaves, she proclaims that thing will be different during the Kyoto Goodwill Event.

Kyoto Goodwill Event Arc
On the day of the Kyoto Goodwill Event, Mai arrives at the Tokyo College along with the other Kyoto students and faculty. As the Tokyo and Kyoto students meet, Gojo shows up and hands the Kyoto students souvenirs from his trip. As Gojo reveals that Sukuna's host, Yuji, is alive, Mai focuses more on the souvenir. Afterwards the faculty explain how the event will go, Mai attends a pre-event meeting along with the other Kyoto Students. As Yoshinobu tells them that they will kill Yuji during the event, Mai talks with the others about how they will handle it.

When the event starts, Kyoto students manage to locate Yuji and attack him. The Kyoto students are force to retreat by Aoi, which Mai splits with Mechamaru. Later, Aoi helps out Momo by knocking Nobara out with a rubber bullet. Mai then calls Momo, and tells her to continue supporting them by flying in the sky.

Suddenly Mai is confronted by Maki, Mai plans to fight Maki alone instead of calling for backup. As Mai fires shots at Maki, Maki easily cuts them in half. As Maki manages to close the distance, Mai fires more bullets but Maki easily counters them. After Mai fires all six shots from her revolver, Maki starts to close the distance again before Mai can reload. When Maki gets close enough, Mai uses her Cursed Technique to construct another bullet and fires it at Maki. Maki manages to catch it, and Mai is defeated. Mai suddenly tells Maki that she would have been fine working as a servant to the clan as long as Maki was with her, which Maki responds by saying that she would have regreted it. As Maki leaves, Mai remembers how her sister said that she won't leave her and calls her a liar.

When the site is invaded, Mai notices that a screen is covering the site. Mai is with Nobara when they come across Utahime and an intruder. As Mai, Nobara, and Utahime prepare to face the intruder, all of them notices that the screen has been raised and the intruder leaves. After the intruders have been dealt with, Mai attends a meeting where they all agree to continue the event and play baseball. During the game when Maki hit Aoi with the ball, Mai tells Maki that that was a good pitch. After the event is finished, Mai heads back to Kyoto along with the other students and faculty.

Abilities and Powers
Overall Skill & Ability: Mai is a Grade 3 Sorcerer and a good shot with her pistol. Capable of infusing her bullets with Cursed Energy, just one direct hit is enough to take down a fellow Sorcerer or a Curse. While keeps up the façade that she is more powerful than her sister, she does not possess the physical skills to contend with her. Additionally her Cursed Technique is unrefined and can only be used once.

Expert Marksman: Mai is well versed in wielding her pistol in battle. In a close range scrap she's willing to blast her opponent several times point blank. From distance, Mai is able to hit her mark with sniper-like precision. Just before Nobara was about to defeat Momo during the Goodwill Event, Mai fired a rubber bullet into he temple that left the first-year instantly unconscious.

Trivia

 * Mai ranked 24th place in the manga's 1st Character Popularity Poll with 1,064 votes.
 * It is said by Gege Akutami that Mai is a natural-born troublemaker.
 * Mai is 170cm tall.