Touya Mochizuki was accidentally killed, and as an apology, God allows him to be reborn in a fantasy world and will grant him any one wish he desires. And so, Touya chooses to keep his smartphone in the next world. In his second chance at life, he befriends many important figures and comes across the world's secret. He inherits the legacy of an ancient civilization and travels around nonchalantly while possessing powers that rival this world's kings.
Disowned by his father, Jugo Yama has run away from home to the island of Nanae. He begins to live by himself, only to discover his room is haunted by the ghost of Nanana Ryugajo. She was murdered ten years ago, and her killer must be found before she can rest in peace. Before her death, Nanana collected things from all over the world and hid them throughout the island. Using the mysterious powers of these hidden items, they should be able to find the culprit. As Jugo begins his hunt for her collection, however, he discovers he's not the only person searching.
Junior High student Jimon Asuta is in a fix. He had a big fight with his dad and was kicked out of the house. With no money and no place to live he shares the last of the food with an unusual little girl he encounters. It turns out she is Venera the Great, the leader of the secret organization Zvezda and committed to conquering the world. At first he thinks it is just a little girl's fantasy, but strange events with weird technology soon prove that Zvezda is, in fact, for real.