Humanity will be destroyed if he sees underwear!? Punch Line is an original anime series from the noitaminA block, focusing on Yuuta Iridatsu, a high school student with a peculiar habit. When he sees a girl's panties, he gets so excited that he faints! After a certain incident involving a ghost cat, his soul becomes separated from his body. Using his special powers, Yuuta observes the daily lives of the apartment's inhabitants and occasionally plays tricks on them. Eventually, Yuuta decides to uncover the secrets behind why Earth will be destroyed and attempts to save it!