Description: Seven Mortal Sins X-TASY is a cross-media production project launched by publisher Hobby Japan in 2012, whose IP content includes manga and animation. It is a Japanese RPG that continues its animation and original voice actors. The battle scenes and the stories take the nonsensical route of "serious X prank". The story is about Lucifer, the fallen angel, who was sent to hell for her sin against the Gods. In the lowest level of hell, the demon lords who rule over hell have sealed Lucifer's power. Although Lucifer lost everything, she leads the demon lord Leviathan and a high school human girl Totsuka Maria as the "Arrogant Demon Lord Lucifer" and started a journey to fight back against the seven mortal sins. The story surrounded the "Seven Mortal Sins" thus began.