Our protagonist, who goes almost unnamed, except when he’s called “Ka-bou” by his childhood friend, finally meets the girl of his dreams, Kanda Asuka, and confesses to her the very next moment. Oddly enough, she warns him that nothing but despair will fall upon him, but he doesn't care about this fact. Amazed by the protagonist’s confidence, Asuka accepts his confession, but under one condition: To change the inevitable future that she’s able to foretell. With rumors that she is the Lapis Witch, Asuka has the Pandora Box ability to foretell the dark future. To change the future, will our protagonist be able to accomplish this tall hurdle? Will he even take a step closer to finding romance with his new “girlfriend”? (Source: MangaHelpers)

The story follows Lana, who lives in a country where every person is granted a skill by the queen on their 15th birthday. Lana is given the skill “Breathing” (Kokyū), a skill he has never heard of, but he has always dreamed of diving into a dungeon as an adventurer. The skill is basically a joke and initially seems to only do what it sounds like: allow Lana to breathe. Initially he plans to give up his dream, but then decides to challenge the dungeon anyway in order to rescue his sister, who is currently asleep under a witch’s curse. Lana has one year to reach the bottom level of the dungeon where the cure lies. Lana is determined to reach the bottom even without the benefit of a skill, but what he doesn’t know is that he actually was gifted the strongest skill “Kami Kokyū” (God Breathing). (NovelUpdates)