After the Fairy Maidens Fell to Darkness, They Captured Me to Ruthlessly 'Repay' Their Gratitude

As a villainous demonic cultivator, isn’t it perfectly normal to take a fox demoness as a spiritual pet? As a villainous junior brother, isn’t it reasonable to make the cold and stunning senior sister reveal a shy side? As a villainous disciple, isn’t it my duty to melt the icy heart of my villainous master and save her from the abyss of corruption? … I was wrong. After they fell to darkness, they captured me and ruthlessly “repaid” their gratitude. — Description from novelcodex.org