Villain: the Protagonist's Brother Is Revealed to Have Been Poisoned at the Beginning

Lan Haotian traveled to a world where several online texts merged, As soon as he crossed over, he was poisoned by his brother. After Lan Haotian saw through it, he awakened the villain system, You can grow by seizing the opportunity of the protagonist, modifying the plot, and conquering the heroine. After winning the No. 1 Heroine Su Qingling in Master Down the Mountain, I heard that the protagonist has seven senior sisters? The eldest sister is Lan Haotian's cousin... Fifth senior sister is Lan Haotian's fiancée? The other senior sisters are even more beautiful than gods...... Son of Destiny, please be my stepping stone! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.