every year, on the final day of the new employee welcome hot spring trip, two new hires assigned to the personnel department were offered another night. it is customary for the trip organizer and the next year's candidate to stay another night as a perk. we're thinking of having you two handle next year's hot spring trip, but we've already told upper management, so tomorrow is a special holiday. the two excited about the tempting extra night. that night, they get lively again with the seniors at a party. during the lively party, the new hires say, "excuse me, we're going to bed early," and return to their own room with a slight drunkenness. the seniors' smug smiles as they see them off. what fate awaits the two new hires targeted by the senior employees...