Yami Kakusei Shite Shujinkou ni Bokosareru Kamase Inu ni Hyoui Shita ga Gensaku to Chigaisugite Tomadotteru

also known as I Possessed the Underdog Who Awakens to Darkness and Gets Beaten up by the Protagonist, but I'm Confused Because It's Too Different From the Original Work / 闇覚醒して主人公にボコされるかませ犬に憑依したが原作と違いすぎて戸惑ってる