Wave Motion grants Nejire the ability to convert her vitality into energy that she can discharge as blast waves.
Upon release, the energy converted from her stamina is unleashed as golden energy that travels in the form of a spiral.
The amount of vitality converted can be adjusted by Nejire at will.
That energy produced from this Quirk does not travel quickly, but its raw power can be used in a number of ways.
Converting too much stamina can wear out Nejire if she overuses her Quirk.
Nejire is a very proficient user of her powerful Quirk. Despite its lack of speed, Nejire utilizes the energy surges to boost her own mobility. By doing so, she can quickly close the gap between her and the target before unleashing blast waves at close range. The waves have proven to be very effective against large enemies who also lack speed.
Nejire can control how much energy she wants to output and can release it from her palms and her feet. By releasing small amounts under her feet, Nejire can levitate herself with fine control. She can defend herself and use the waves to attack from long range. A combination of the aforementioned applications is effective for Nejire controlling a battlefield and keeping her distance.  Her overall fighting style and Quirk handling are reminiscent to how Katsuki Bakugo utilizes his Explosion Quirk.
Activating her Quirk requires Nejire to drain her own stamina. She can suffer from fatigue if she overuses it. Through intense training and Quirk development, this has allowed Nejire to build up an immense amount of vitality and makes her resistant to stamina draining Quirks. 
- In the anime, Wave Motion is mistakenly called Surge.