The Monster Male Lead Lives Under My Bed

I received a slime as a war trophy from my warmongering brother. For now, I decided to hide it under my bed and secretly raise it. Even though it's a monster... "Mew." I chattered away all my secrets every day to my first friend. Everything, including the fact that I was a transmigrator and the contents of the original story. "Actually, this is a R-19 dark romance fantasy novel. The male lead was really something." "Mew?" "The level of explicitness was, well..." At my words, the slime's bright blue body flushed red. It also seemed to be growing little by little as the days went by... Is this really a slime? But neither curiosity nor suspicion lasted long. Because my father kille...