On the final day of the welcome hot spring trip for new employees, there's a tradition where the event organizer and next year's potential organizers get the perk of staying one extra night. "I'd love for both of you to handle next year's trip—what do you think? You'll have a special day off tomorrow, so you can really enjoy another night here." Excited by the hot springs and the prospect of extended leisure, the two young office ladies cheerfully discuss buying spare clothes and calling home to inform their families. Little do they know, this seemingly generous offer is actually a premeditated plan by their seniors—an initiation ritual designed for the fresh newcomers to be devoured.