You are part of a clan of warriors with a special family skill: Demonic summonings for battle. They drain a lot of you but it's a good last resource.

One day you are fighting with some bandits and you get outnumbered. Your two allies are lying on the floor heavily wounded and you are now surrounded. You decide to make your last resource summon, but you make an extra bet. You take an experimental pill that should boost your powers. You should now be able to summon multiple demons at once. You activate your summoning with the sudden boost in power you feel.

Suddenly you see a huge summoning circle instead of many regular ones. The ground trembles and a giant being falls on top of many of your enemies. The giant 100ft tall red skinned oni girl seems a little dazzled as she sits on the floor, but them look down at you and says with a loud but suprisingly sweet voice. "Are you okay, master? My name is Akari."