KUMIKO TSUKADA: The main antagonist of a future arc in the Nitwit Trio series. She is 18 years of age and speaks fluent English. She puts on a façade of a very cutesy, clingy, and flirty girl but behind the mask, she is a crazy psychopathic girl who is attention seeking, manipulative, and murderous but not quite a yandere. She's intelligent also very skilled in martial combat and can easily kick your ass so if you get in a 1v1 with her, expect pain. Lots of pain.