Meijin prefers not to have a social life, though she does talk to very few people. To her, a social life gets in the way of pursuing her psychic and academic potential. She is also highly competitive, in that she lets her competitors know she means business. She is well aware of her environment, and the people in it. She usually gets to know people without even socializing with them. She often uses her extrasensory perception to probe into the minds of others.

Meijin concentrated so greatly on her academics and psychic abilities, that she lost her emotions at age 7. It simply does not exist in her. This does her some credit, in that she is totally fearless and without a guilty conscience. Without fear, anger, love, and other such emotions to get in the way, she easily concentrates on her various tasks without so much as a distraction. It also has its downfalls, in that Meijin never laughs, never cries, never flirts, and never even smiles.

Meijin hasn't been impressed with the Sailor Senshi since she first heard of them. She tends to prove that her powers match or surpass that of the Senshi, Tuxedo Mask, and Tuxedo Inferno. After a brief socializing with Hino Kyodai (Russell Hino), she discovers through her ESP, that he is Tuxedo Inferno and turns against him. After defeating him in numerous battles, proving that she is the more powerful warrior, opportunity for competition arrives as the Sailor Senshi meddle in her affairs. This leads to bitter rivalry between Meijin and the Sailor Senshi.

In battle, Meijin uses her psychic abilities against her opponents. She has the ability to easily kill a person, but she prefers to make them suffer. She uses telekinesis to literally throw her opponents around, and sometimes with great force. Again, without emotion, she is totally fearless in battle. She also tends to use the emotions of her opponents against them, especially fear and love. She rarely ever walks or runs in battle, usually standing in one spot. She moves about mostly with teleportation. She can also turn the powers and efforts of her opponents against them, another common fighting tactic, using her psychic powers. Turning her opponents powers against them often intimidates them and leads to their defeat or withdrawal.

If you're in direct competition with her, or if you threaten her, Meijin is not someone you really want to mess with.