Momo Yaoyorozu, Kyoka Jiro & Denki Kaminari vs. Villains

Momo Yaoyorozu, Kyoka Jiro & Denki Kaminari vs. Villains is a battle fought by heroes-in-training Momo Yaoyorozu, Kyoka Jiro, and Denki Kaminari against several unnamed villains associated with the League of Villains.

Prologue
Having been suddenly ambushed by dozens of villains, Thirteen and Eraser Head try to evacuate Class 1-A from the U.S.J. facility. After Eraser Head descends to the central plaza to fight back against the invading villains, Kurogiri slips past him by using his Warp Gate Quirk to appear before the students and Thirteen by using his Quirk.

Kurogiri introduces himself and the League of Villains before inquiring about the whereabouts of All Might. Thirteen tries to use her Quirk, but Katsuki Bakugo and Eijiro Kirishima jump out and attack Kurogiri.

Their attacks prove fruitless and Kurogiri uses his Warp Gate to separate the class and send them to the various simulation zones. Momo Yaoyorozu, Kyoka Jiro, and Denki Kaminari are transported to the Mountain Zone and are ambushed by villains.

Battle
Momo creates weapons for herself and Kyoka to defend themselves while Denki runs scared, avoiding the enemies' strikes. He begs for a weapon, but Kyoka tells him to use his Electrification Quirk to attack the villains and create an escape route.

Denki explains he can surround his body with electricity but if he releases it, it will spread out across the area and risk hitting the girls. He also warns that he can't call for help as someone is jamming the signal, so they can't count on him.

The villain Hard Head takes a swipe at Denki, but he ducks. Annoyed by his whining, Kyoka kicks him into the villain, telling him to act like a human stun gun. Once he bumps into Hard Head, Denki instinctively activates his Quirk and electrocutes him. Even Denki himself is surprised by his potential and tells his teammates that they can now count on him in the fight. Kyoka tells him that he is too happy-go-lucky.

The villain Gravitational Spring tries to use his elastic Quirk to strike Denki with a stone covered arm. Kyoka counters by blasting the stone apart with sound waves using her Earphone Jack Quirk. Gravitational Spring's fist slams on to Denki's face, and gets electrocuted. Another villain tries to jump in and Momo uses her Quirk to create a capture net. The villain fall into Denki and gets shocked as well.

Momo asks them to take combat seriously. Kyoka apologizes and uses her amplified sound waves on the surrounding villains while complaining and askes why Denki did not request aiming gear for his costume. The villains to block their ears in pain due her attack, and some of them faint. She nearly suffers from an enemy sneak attack, but she doges the attack and Momo repels the criminal with a kick.

Momo notes that she takes a while to create big objects. She creates a one-hundred-millimeter thick insulation sheet to protect her and Kyoka, allowing Denki to use his Quirk at its full power. Denki thanks Momo and sends his electricity shooting out, shocking all the villains at once.

Aftermath
Kyoka notices Momo's shirt is destroyed by the blast and her breasts are exposed. Momo explains that she can easily create a new one. As Denki walks towards them, Kyoka covers Momo and tells him not to look. They are both surprised to see a stupider version of Denki walk past obliviously after short-circuiting his brain from his own attack. They are so distracted that they don't realize there is still one undefeated villain left.

Tesla suddenly appears from his hiding underground and takes Denki hostage. The villain reveals that his own electric type Quirk allowed him to resist Denki's attack. The villain assures them that he would not like to kill someone with a Quirk similar to his, but he will do so without hesitation if Momo and Kyoka try to use their Quirks, ordering them to surrender. Kyoka regrets that they let their guard down completely, and Momo deduces that he is the villain responsible for jamming the communications.

As the villain walks towards them, Kyoka tries to distract him with small talk so she can enter her earphone jack into her boot and attack, but Tesla notices and threatens to kill Denki if they do not comply with his demands immediately. Little by little, some of the defeated villains regain consciousness.

The students are saved when Tenya Ida returns to the U.S.J. with reinforcements from U.A. High School. The hero Snipe uses his Homing Quirk to shoot Tesla, wounding him and saving Denki, Kyoka, and Momo. Soon after, Ectoplasm joins them and help to subdue and restrain the remaining villains.

Anime & Manga Differences

 * In the manga, none of the electrocuted villains stand up.
 * In the manga, Ectoplasm is never shown helping the students.