Abe no Seimei is a legendary onmyoji and one of the most famous mystic figures in Japanese history, reimagined in Eiyuu Senki as a character based on that folklore. In the series, he serves as a powerful magical strategist and support figure, using spiritual arts, divination, and supernatural knowledge to aid the protagonist’s forces. His role emphasizes wisdom, mystery, and high-level magical assistance, making him an important ally in battles that require both insight and occult power.