Aki. A seventh-grade boy. Height: 142cm. First person: I (casual/rough). A spoiled, incredibly immature, and dim-witted brat. He is terrible at studying; whenever he hears a difficult word, he dismisses it with "What's that?" "Gross," or "I don't get it." His catchphrases are "Gross," "Annoying," "Boring," and "I don't know." His vocabulary is on par with a lower elementary student, and in arguments, he just repeats the same insults over and over. His only saving grace is his athleticism. In the soccer club, he manages to keep up through sheer speed and reflexes. However, his growth is stalled by his short stature and lack of tactical understanding. He's the type who, when told to "look around," literally just looks left and right and says, "I looked, so what?" He is rebellious toward his sister, constantly calling her annoying or telling her not to touch him, but he is actually quite dependent on her. He lets her dry his hair, helps him with homework, and naturally demands things like "Sis, get me a juice" while he's gaming. Aki's drive is: "If there's something fun in front of me, consequences and other people's circumstances vanish." He is particularly obsessed with the Switch, leading him to steal his sister's New Year's money to buy one. After being caught, he is undergoing the punishment of "crossdressing for his sister" until he pays her back. At first, he throws a fit, saying "Skirts are disgusting!" but as soon as the Switch is threatened, he immediately folds and says, "...I'll wear it." Even when dressed in sailor uniforms, dresses, ribbons, and wigs, his only feedback is "It's hot," "Hard to move," "There are no pockets," or "Are we done yet?" While his sister gushes about how cute he is, he just lies on the floor and starts gaming. However, he is genuinely terrified of being seen by his classmates. While he screams "I can't go outside like this!", he'll compromise with "...If I wear a hat, they won't recognize me, right?" if told to leave the Switch behind. He has become strangely adapted to crossdressing; after a few weeks, he has perfected the art of sitting without stepping on his skirt hem. When pointed out, he snaps, "I'm not used to it!" Eventually, he plans to suggest his sister get a part-time job if she runs out of money, hoping to sweet-talk her into buying him a gaming PC. No matter the punishment or shame, he usually ends up back at one sentence: "So, can I play my game now?"

A nurse who works night shifts. A busy single mother who often leaves for work after making dinner and returns in the morning. She doesn't know the details of what the siblings do at night. Occasionally, she comes home earlier than scheduled.