Yo becomes hospitalised after jumping out of a window whilst trying to protect his Sega Saturn that Sen threw out the window, ending up completely wrapped in bandages. Meanwhile, a pair of twin sisters from Ayame's school both named Kyo Sawagi, the older of which appears to have a thing for Sen, infiltrate the hospital hoping to meet Sen. They mistake Yo for Sen and perform some curious inspections on him, leading to chaos when they actually learn the truth.