Applicability: Kuroe's condition can be applied to many different situations that adolescents deal with. The parallels with puberty are obvious (especially since the most drastic changes she goes through are triggered by her affection for Arata), while Rebecca Silverman of Anime News Network has compared her desperation to hide her changes to body dysmorphic disorder.
Harsher in Hindsight: At the beginning of chapter 17, which was first serialized in late 2019, Arata starts wearing a face mask in public and tells Kuroe that the two of them should keep distance from each other for a while. In the original story context, these are tactics for him and Kuroe to avoid the attention of paparazzi and other prying eyes in the wake of him getting kissed by Harugon. But the COVID-19 Pandemic the following year (during which the tankÅbon volume including the chapters showing Arata's new practices would be published) saw people having to wear face masks and practice social distancing to avoid getting infected.
I Knew It!: Arata being a Secret Secret-Keeper was widely speculated as far back as the first chapter when he holds Kuroe's hand as she starts transforming. Chapter 35 confirms that he does indeed know that she and Harugon are one and the same.
Periphery Demographic: The manga was written first and foremost as a Shoujo manga aimed at women. However, while there's a decent number of female readers, one which got a major bump after the author mentioned the lack of them, a large majority of the fans are male, something that surprised yet elated Spica Aoki. The fact that it's a story about a Kaiju published in a seinen magazine (Monthly Comic Alive) probably helps. This may have been why Volume 5 onward introduced a much more action-heavy arc.
Kuroe has spent almost her entire life as an ostracized outcast, with students at her middle school viewing her as a terrifying monster due to her condition, and students at her high school viewing her as a creepy loser due to her avoiding everybody. It's to the point she just came to expect that she would never be able to find anybody besides her mother that would give her the time of day, and occasionally she borders on Woobie, Destroyer of Worlds due to her major lack of self-esteem sometimes causing her to think that she'd be better off literally being the monster people see her as. It wasn't until she met Arata that she found another person that actually pays attention to her and cares about her, and even then she still expresses doubt that she deserves to be with him.
Another girl who has feelings of social inadequacy is Rairi. As a result of her having the face of a gorilla, she was constantly viewed as a joke by everybody, especially the boy she used to like, which resulted in her having terrible self-esteem. She wound up getting into make-up when she learned that with enough effort she was capable of making herself as beautiful as a model, and became very concerned about anybody ever seeing her true face. All of that came crashing down after meeting her old crush again, as she initially believed that she might have a chance this time, but he turned out to be the same two-timing jerkass from middle school. When she finds that out, she tries to leave him, only for her to accidentally wash off her make-up and reveal her true self to him. When the two get back to their group, she initially believes that everybody would go back to making fun of her... until it turns out that all the girls she's helped throughout the years with her make-up advice truly appreciated her, not even caring about her gorilla face, with them even standing up for her against her old crush.
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