An 80-year-old Mage-Emperor is murdered by his closest companions because of his own vanity and thirst for power。 He is reborn into a fantasy Japan-like world as a baby。 Using his vast knowledge of magic and strategy from his previous life， he aims to become this new world's most powerful warrior: the Kensei。

This reincarnation story features the use of enchanted tattoos crafted from Magical Beasts， martial arts， empire-building， and light cultivation elements。 The Main Character is hyper-intelligent and hyper-competent。