Happiness

Happiness was a lovely palm-sized monster that the protagonist acquired in a "Montama Gacha" [Monster Egg Gacha] at a magic tool store. But with the power of the erotic spellbook, he turned her into a harpy girl. Her personality is innocent, cheerful and energetic. Her trademark is her ahoge and her fluffiness. It has only been about two weeks since she was born from an egg, so she is interested in anything that she sees. She undoubtedly believes in the words of the protagonist, who raised her, and is trying her best to learn about the world because she wants to see him happy.