Summary microHUNTER from Kainu Manga
microHUNTER summary: While out to get his sister’s favorite snack, Baekhyeon finds himself and the people around him suddenly shrinking... to the size of ants! Now, everything from cats to robotic vacuums pose a threat to human survival. Within this chaos, everyone is given a gift -- a unique superpower and interface that lets them see data about themselves. Though it’s become a dark and desperate world, Baekhyeon must put his ability and wits to the test to make it out alive and save his sister.