Grief-stricken over the death of his last family member, his dog Hanako, picture book writer Hotaru Yuuyami suffers from writer's block for nearly two months. Despite his childhood friend and editor Tsubaki Uehara's best efforts, nothing seems to alleviate his pain. But all of this changes one day with the sudden apparition of Kinoko Inu, a mysterious mushroom from his garden that turns into a dog-shaped animal. Much to the great dismay of Tsubaki, Hotaru hastily invites the creature into his abode. Days after Hotaru and Kinoko Inu start living together, the strange mushroom-dog decides to burn the last of Hanako's personal belongings in order to alleviate Hotaru's depression. However, the cohabitation between the overworked writer and his mischievous guest proves more difficult than expected, and Hotaru must let go of his grief if he wants to properly take care of Kinoko Inu.

For blasé college dropout Tsunehiro Sasaki, life has become hopeless. After failing to enter a top university, he has lost all his money trading on financial markets and is now critically indebted. To add to his misery, he learns that he only has at most two years left to live due to an incurable disease. The trajectory of Tsunehiro's life suddenly changes after a group of amateur fishermen saves him from drowning as he was trying to escape from a trio of creditors. While Takaaki Tsutsujimori pushes Tsunehiro to work at the group's workplace—a convenience store that doubles as a fishing shop—Hana Ayukawa tries to share her love for fishing. Although the attempts of the joyful group of anglers initially prove unsuccessful, Takaaki urges Tsunehiro to take a fresh start in life, and the young man eventually accepts the fishing enthusiast's assistance to pay off his debts. As work, friendships, and an unfamiliar hobby all suddenly find their way into his life, Tsunehiro must find the strength to change his ways if he wants to make the best of his remaining time.

After the mysterious disappearance of one of its participants, the battle meant to name a successor to God is brutally interrupted, leaving behind a trail of destruction and shaking the world. Twelve years later, while the former contestants in the divine competition struggle to fit in society after they were turned into semi-permanents—beings unable to age—Lall refuses to let go of her brother, who has been forgotten by everyone. Determined to resurrect her brother—the only one she sees fit to sit on the heavenly throne—Lall steals her his cellphone from a cult run by a past competitor, which accidentally restarts the competition. Helped by her classmate Eko Sasaki, Lall will show no mercy to prevail against her enemies in her efforts to finally see her brother again.

A teenager who was resurrected from the cemetery of the gods and demons, in the new continent formed by the collision of the East and the West ten thousand years later, searches for the truth of the fall of the gods and demons ten thousand years ago, as well as the pursuit of his lover Yuxin, the whereabouts of his parents and the reason for his resurrection. The protagonist develops, and finally leads to a story about the six paths and the chess game of heaven and earth.