Kamiomi Tsukuyomi

Acting as a dedicated teacher at his sister's high school, this devoted educator shares an inseparable bond with Sasami. As her older brother, he displays an intense, nurturing affection for her, frequently doting on her every need. This protective and sweet-natured personality is so prominent that Tama affectionately refers to him by the nickname "Paparin," highlighting his central, caring role within their close-knit family dynamic.