Queen Nightmare Lexi-sama

In the world, the beast known as Ack co-exit found in the forests of Asia. There are 8 gates of the Ack realm inside dungeons. The divide between human society is an ordinary society and a spiritual society where humans develop spiritual styles to mission kill evil Ack. Ordinary society is not aware that Ack and spiritual society exists. Mc is Lexi who is one stronger evil Ack is summon by smart boy name is Souta is from spiritual society, members of Zen clan pose summon spiritual art. Mistake he summon evil strongest Ack Lexi but after summon system errors Lexi can't use all power Lexi was no choice and Lexi decided because live life like human.