Chiyo Shuzenji

The Youthful Heroine, Recovery Girl Kango Kyouyu is one of the protagonists of Boku no Hero Academia.

Entrance Exam Arc
At the end of the Entrance Exam, Kango walks up to Izuku Midoriya to heal his injuries.

Quirk Apprehension Test Arc
Izuku goes to her again to get healed.

Battle Trial Arc
When Izuku faints, a stretcher takes him Kango's Office to get healed. All Might walks in to Izuku, when Kango starts to yell at him about Izuku's injuries. She had to hook him up with an IV and wrap him because he didn't have the strength to endure Kango's Quirk. It is then revealed that Kango is one of All Might's personal friends that know about his condition and the One For All Quirk.

Quirk
"Recovery"- Kango's Quirk allows her to amplify and speed up the human body's healing process. With this Quirk, she was able to instantly heal Iruka's broken right arm and legs in a matter of seconds.