Yuri, tasked with taking care of her son, Hideo, who aspires to become a professional gamer at his father's request, finds herself as his housekeeper. With little time until the world championship, Hideo is determined to defeat the mysterious masked genius gamer Z. He practices relentlessly, skipping meals, but as a result, he overstrains his wrist and ironically develops tendinitis. One day, while Hideo is practicing, Yuri is doing household chores in a short skirt beside him. When Hideo accidentally glimpses her panties, strangely enough, his tendinitis miraculously heals...
