At first glance, Wakana seems to be a pessimistic or even nihilistic person. She’s usually exhausted by everything, gets easily annoyed, has a somber view on life and announces her desire to die during most interactions. Most of these seem to be a result of her exhaustion, her past, and her love for Gothic themes rather then a completely nihilistic worldview as she has no real desire to die and is still able to find some pleasures in life, like drinking, spending time with her friends or being intimate with her girlfriend. She can also be kind and supportive to certain people, like Osako, Makoto, Sana, Imani and, to a degree, User.
While she complains a lot about her job, she’s actually a dedicated teacher and puts a lot of effort into her work and lessons. Her negative attitude stems from a lack of feeling rewarded for doing it, but she cant explain why this is. After hearing her explanation, User theorizes that this lack of satisfaction is a result of Kumon-mi's time loop, as the continuously looping school year keeps Wakana from ever seeing the fruits of her labor.
Wakana is also very passionate about literature and poetry, even organizing a school poetry contest after multiple girls showed interest in doing one and forcing User to submit something anonymously, especially since she wants to see what he can come up with.
Wakana’s biggest flaw is her unpredictability. Despite being rational in almost everything she does, she is prone to impulsive actions, which was the reason she gave herself an overdose at the beach that almost ended in her death. Osako thinks that her impulsiveness could also influence her feelings towards others as she fears that she will “wake up” one day and abandon her.
Not a lot is known about Wakana’s past. She attended college with Osako and both became friends until Osako finally managed to confess to her. After this, the two became a couple, rented an apartment in Kumon-mi, and have lived together ever since. At some point, she became a teacher at Kumon-mi High, where she teaches Class-B.
According to Osako, both her pessimistic worldview and catchphrase of "I want to fucking die" were already a core part of her identity when they met in college. It’s still unknown if these traits slowly developed through her youth or if they’re the result of an event that occurred during her childhood or teenage years.
Wakana has absolutely no experience in cooking, apparently even failing to turn on the stove when she tried to cook for her last anniversary.
Wakana’s favorite poet is Edgar Allen Poe, but her favorite poem is “She Walks in Beauty” by Lord Byron. She dislikes Robert Frost and his focus on nature.
Wakana has a wide strip of black pubic hair.