The early stage of Mikkyo, Zo-mitsu (the Mixed Esoteric Buddhism), which was established at the stage when magical elements were incorporated into Buddhism, was not particularly systematized but aimed to gain practical benefits in this world by reciting mantra, Shingon and litany, as well as the spell of each Buddha, being affected by the mantra of Brahmanism, in which religious services were performed.
呪術的な要素が仏教に取り入れられた段階で形成されていった初期密教（雑密）は、特に体系化されたものではなく、祭祀宗教であるバラモン教のマントラに影響を受けて各仏尊の真言・陀羅尼を唱えることで現世利益を心願成就するものであった。