Mikan Tsumiki

Mikan is an extremely meek, paranoid and fragile individual who suffers from hazardously low self-esteem as a result of severe abuse and bullying. This has resulted in many behavioral symptoms such as being easily intimidated, breaking down and crying with little provocation, profusely apologizing and nervously stuttering while speaking. She constantly worries about annoying, boring or offending others. However, as the Ultimate Nurse, she tends to act much more confident while doing her job, and she is knowledgeable and intelligent. Furthermore, she sometimes gives (often unwanted) health advice to others concerning things like eating and sleeping, and may occasionally start to describe things like bodily functions in way too much detail in her wish to give the other students' information on the subject at hand.

Perhaps because of her high understanding of human physiology, Mikan is shown to be very skilled at reading people's faces, but she tends to over-analyze them and is quick to assume that she is disliked by those around her. She generally wants to be liked by and help other people, but her utter lack of confidence and wish to not be a bother causes her to rarely assert herself or state her feelings openly; if she feels the need, she will more than likely ask for permission from her peers to do so. Since her social intuition is generally poor, if there is an awkward pause in a conversation, she will immediately begin to panic and apologize, believing it to be her fault. Notably, she appears exaggeratedly and purposefully clumsy and often ends up in embarrassing and revealing poses, in order to gain attention and pity, leading her to apologize profusely.

Because of the severe abuse she has incurred in the past, Mikan is very awkward and has a warped perception of both positive and negative social interaction. When treated with any sort of individual respect or sympathy, her first response is most often outright confusion, and sometimes assuming she has done something wrong, offering those she meets for the first time to beat, strip, draw on or do other bad things to her, stating that she has done so multiple times with others so that they won't hate her and will continue to associate with her. She relates this to a belief that being ignored is even worse than being abused, thinking that the people who don't bully her don't care about her existence at all, a prospect that scares her much more.