Mai comes across as a friendly though flirtatious person, being talkative and excitable, though occasionally obliviously making remarks that may make people uncomfortable; such as asking Sara to rub her cheek to compare the materials used to construct her doll-form. She tries her best to help the group, though sometimes her ideas lack foresight; especially shown in the optional bad ending in which she lights a firework inside of a library to fight monsters, leading the room to be engulfed in flame with no exit.

Despite this, Mai like the rest of the dolls was given the task to kill their partner to be able to live. She’s the first person to take up this task, stabbing Q-taro in the back and smiling as she does so. It’s later suspected that all the dolls were awaiting the perfect moment to kill their partners, which can be backed up as Mai was often seen close to Q-taro during the investigative periods.

In her First Trial, Mai is shown to be panicked to the point of sobbing, and unable to make a decision decided to go with a random choice to decide her fate.