Reiko Yanagi/Synopsis

U.A. Sports Festival Arc
Reiko finishes the Obstacle Race at 26th place. She teams up with Itsuka Kendo, Kinoko Komori, and Setsuna Tokage for the Cavalry Battle, and doesn't object once Itsuka suggests for their team to allow Team Tetsutetsu to participate in the 1 vs. 1 battles in their place.

Forest Training Camp Arc
Reiko is seen with Yui Kodai, Kinoko, Pony Tsunotori and Setsuna when Classes A and B are heading out for the school trip. On the second day of the training camp, she listens along with the rest of her class as their homeroom teacher explains that they will be training their Quirks.

U.A. Cultural Festival Arc
Like the rest of her classmates, Reiko participates in the Cultural Festival by helping her friend Itsuka prepare for U.A.'s Beauty Pageant contest. When Neito Monoma, Tetsutetsu Tetsutetsu, and Yosetsu Awase barge in to check on Itsuka, Reiko tells them not to barge in so unexpectedly. Later on, Reiko presumably watches Itsuka perform in the Beauty Pageant during the Cultural Festival.

Joint Training Arc
Reiko, along with the rest of Class 1-B are pitted against Class 1-A as part of the Joint Training Exercise. She is placed in the fifth round of match-ups. As the matches go on, Reiko and her teammates watch Neito in exasperation as he shows further signs of insanity.

While waiting for their upcoming match, Reiko notes that Izuku Midoriya could serve as a major threat to Team 5-B's victory, highlighting his newly-developed fighting technique. She then notes that Izuku could easily catch her team off-guard even by a second.