Amongst all the problems one will face during one's life, there is "loss", something that can appear in different ways, and that can leave different types of harm... so that's why we have Divers, people with a special resistance called "MR" that are capable of helping others by Diving into their minds and seeing through their problems, but for Masuyo Hirano being a Diver is just a task that he had to do so he had a chance to look for his missing uncle.