As part of the city's volunteer work, the fixed-price unlimited insertion system was started to help recluse NEETs and school-refusing children return to society and education. As long as it is not in public, it is a form of visiting support, and you can insert it anytime, anywhere, 24 hours a day. The volunteer staff are limited to beautiful women in their 20s, and if there are too many applicants for rehabilitation (men only), a lottery will be held, and the winners will be announced when the volunteer staff is dispatched.