Valentine's Day Romance Kiss

Valentine's Day is one of the most romantic festivals in the world. Our superhero warrior Natalia also fell in love. Although her identity is kept secret and the top secret of the Intelligence Bureau, in order to prevent some students who like to peep from taking pictures of Natalia and Photo of her boyfriend, the Intelligence Bureau decided to take some effective coercive measures, such as only allow Natalia and her boyfriend to kiss in places where there is no one and not allow them to walk together on the campus, and invented a very useful alarm, as long as it is found the light of the camera shone on Natalia, and the siren would sound.