My Older Sister Who Loves Her Brother is the Villain

Reborn into a fantasy world, Qin Jiuge became the son of the immortal Qin family.

Looking at my superior background, could it be that I am the familiar villain?

Oh, and what about the system? Doesn't everyone have a system after rebirth?

[Congratulations to the host, awakening the strongest villain...]

Qin Jiuge: The strongest villain!! So cool!

【The Strongest Villain Assistance System】

Qin Jiuge: ???

[The system defaults to binding the host's sister as the auxiliary object. Come on, host, work hard for your sister! ]

Qin Jiuge: ...System, are you messing with me? Doesn't this make me the villain's lackey?