Pony Tsunotori/Synopsis

U.A. Sports Festival Arc
Pony places 37th in the Obstacle Race and teams up with Togaru Kamakiri in the Cavalry Battle. During the battle, She goes after Team Monoma along with Team Kodai after the former managed to trap Team Bakugo with Kojiro Bondo's Quirk. Pony and Togaru end up getting knocked out of the match by Kosei Tsuburaba's Solid Air Quirk.

Pony and Togaru don't get enough points and they are eliminated from the competition.

Forest Training Camp Arc
When Class 1-B arrives at the training camp, their homeroom teacher explains that they will be extending their Quirks and that the more they use their Quirks, the stronger they will be by breaking their limits, and shows them the intense training that class 1-A is subjected to, which amazes Pony. The Wild, Wild Pussycats appear to explain that they will be there to help and guide them in their training.

On the 3rd night of the training camp, Class 1-B acts as the scaring group during the "Test of Courage". However, the Vanguard Action Squad arrive to interrupt the fun by invading the Beast's Forest in search of Katsuki. When Mustard emits his Gas Quirk, Pony is one of the many Class 1-B students that get knocked unconscious by its effects. She is rescued later by Shota during the aftermath of the Vanguard Action Squad Invasion..

Shie Hassaikai Arc
When U.A. High School schedules for an assembly outside the school's dormitories, she is present when Neito Monoma reveals that all of Class 1-B have passed the exam, including him.

Pony speaks up to voice her excitement at upcoming joint training session before Neito tricks her into trash talking Class 1-A and gives Pony a thumbs up at the unintentional insult. She is confused when Itsuka promptly scolds him for teaching her bad phrases.

U.A. School Festival Arc
Like the rest of his classmates, Hiryu participates in the U.A. School Festival by playing a role in Class 1-B's "Romeo, Juliet and the Prisoner of Azkaban: The Return of the Kings!"

Joint Training Arc
Pony, along with the rest of Class 1-B, is pitted against Class 1-A as part of the Joint Training Battle. She is placed in the third round of match-ups, fighting alongside Juzo Honenuki, Sen Kaibara, and Tetsutetsu Tetsutetsu.

After Shoto Todoroki creates a giant wall of ice, Pony takes cover and sends out her remote-controlled horns. Pony manages to separate Mezo Shoji from Shoto. Having predicted, Mezo would hide safely behind Shoto, she uses her horns to carry him away. Pony uses Horn Dash Hammer to propel Tetsutetsu clean through Shoto's shield of ice. Pony pins Mezo to a wall while Tetsutetsu throws Shoto to the ground.

She is nearly caught in the cross-fire of Tetsutetsu and Shoto's brawl when Shoto tries burning Tetsutetsu with a Wall of Flames. Avoiding the flames, Pony has to retreat as Shoto frees Mezo and tells him to go after her.

While retreating Pony is chased by Mezo who pursues her through the labyrinth before she turns to face him because she wants to help Tetsutetsu. She uses her Thunder Horn to try and capture Mezo but he counters with his Octoblow barrage. Pony tries to sneak a horn around Mezo's back but he spawns an eye behind his head and catches it. She watches him signal Mashirao Ojiro and the tailed hero destroys Pony's horn with his Tornado Tail Dance attack. Trying to put up resistance, Pony is soon restrained by Mashirao who keeps her at bay while telling Mezo to go support Shoto. However, Juzo suddenly appears and refuses to leave his allies behind and he reveals himself from the softened ground.

As Juzo sinks both their rivals under the ground, Mashirao struggles to not release Pony by using his Fist of the Tail: Swamp Smack Spin Super Move. In the fray, Pony uses her horns to stab into Mashirao's tail and carries them both away. She carries them all the way to jail and Mashirao is forced to retire from the battle. Her actions result in the battle ending in a draw.

After this, Pony watches the remaining rounds until the Joint Training Battle ends with a 1-A Class victory. Despite this, there are no hard feelings and everyone is still friends with one another, and both classes hanging out together with no problem.

Endeavor Agency Arc
With the Hero Public Safety Commission's demand for all the student heroes to participate in practical field training, Pony teams up with Neito Monoma for her internship.