Adult PC Game: I am the Armourv1.09 by ToraumaCompany Eng Archive

200 years after the Demon King Ravana was defeated by the hero, Shine, Ravana has reincarnated as piece of armour. He is found by Shira, Shine's descendent, and now must regain his magical powers and unravel the mystery of his reincarnation. He is helped in his quest by the strange ability to grow in magical power whenever Shira feels sexual pleasure.​