Saito was reincarnated to the other world at the age of 15, becomes the Great Sage, and defeated the Demon Lord. Shortly after that, the... more>> door connecting the other world and the real world opens, and Saitou return to Japan with the power of the Great Sage. However, 19 years have passed in the real world. Saito, who was drifted away for so long, met his childhood friend Kanako, who’s now a single mother. But it seems like there’s someone who’s targeting Kanako’s life… A story of a slow life wannabe Great Sage who came back from another world begins! <<less

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The continent of Yggdra is a place where humans, ogres, giants, forest sprites, and many more mythical creatures live. Led by the Holy King, the... more>> continent was at peace until one day, a mysterious group called the Black Army appeared and started conquering the land. In response, the Holy King and its troops fought against it, but Holy Capital fell and the Holy King was killed by the mysterious Black King. As the continent was in the glimpse of destruction, hope glimmered as one man, Yuri, the Hero, decided to fight back and formed the Volunteer Army to oppose the Black King and bring peace back to Yggdra. <<less