Giant heroine (R) ArtiAce Extinctly dead! Momose Yuri: A giant human chair monster appears

As Arty Ace, an alien who protects the Earth from farther away from space, she was usually in command as a lily captain of the Earth Defense Force’s Yurisei. However, due to the betrayal of his subordinates who secretly have sexual desires for the captain of Yurina Hyakurisei, he turned into Arti A and became a big pinch during the battle with giant monsters. It was all a coffin of the dark demon king (a giant human chair) that soaked in human desires. The giant heroine alti A is an apocalypse of human nature, being forced by the dark demon king to rapely memorize pleasure and commit crimes until it's overwhelmed. [BAD END]