'Unlimited Insertion Series: Hot Spring Edition' is a fantastic hot spring inn where you can enter anywhere in the facility as long as you pay the entrance fee. Female customers can enter for free and also enjoy unlimited access to the hot springs. The staff inside the inn also offer unlimited insertion, so you can enjoy your favorite play anytime, 24 hours a day. However, some people find that the actresses' styles are too similar, which can lead to boredom. There are also suggestions for improvements in video and audio quality. Some say that there is a lack of realism and storytelling, and are looking forward to the next installment.