One day in 20XX, the alien pig prince who planned to take a human body as his home arrived on Earth, but unexpectedly discovered that the human being he wanted to live in had not yet been born! The pig prince, who has nowhere to settle down, got to know Saiji and Rubi. The three pulled various funny pranks on humans, causing humans to have baldness, bad breath, headaches, emotional crisis and other problems.

On the far side of the Milky Way, there is a planet gestating magical power-Wilhallen. There are four very different countries on this magical continent: the ancient and mysterious eastern empire—Huang; the free and open Nanyang island country—Tapaz; the iron-clad western republic—Vrsaris; and, Civilized and elegant Beilian Gang-Agnesa. All countries enshrine the High God and obtain the gift of divine power. Although there are occasional conflicts, most people enjoy a peaceful life. Until the era of 3836, when a mysterious man in black suddenly came with an unknown dark force, but found himself in the wrong place at the wrong time. Fortunately, the established fate was as recorded in the time document in his hand. Verhallen opened a new parallel world... (Source: bilibili, translated)

Years ago, the gods fought against each other before being sealed away. However their artifacts remained in the souls of the HuaXia clan as part of a contract and hope that someday in the future, they will awaken once more using those artifacts. (Source: Baka-Updates Manga)