Transmigrated to the Immortal Realm, Only to Be Slain by the Tathagata Palm

After transmigrating to the Immortal Realm, I bound myself to the Immortal God Possession System. Before I could activate the System, Buddha discovered I was an anomaly and slapped me to death on the spot. I was reborn on the Spirit Immortal Continent, only to discover that my twin sister was the reincarnation of an Empress. While still in the womb: The reincarnated Empress next door has an Ancient Azure Dragon physique and can temper her body naturally from birth. Me? I have an ordinary physique, and it can’t be changed after birth. “Ding... Main quest: Earn your sister’s approval.” “System, my Empress sister gets to enjoy all the resources first, so why is her approval rating of me still in the negatives?” After birth: “Ding... Side quest: Make your sister cry...” “Ding... Side quest: Make your sister laugh and cry at the same time...” “Ding... Side quest: Steal your sister’s beast milk...” “Ding... Side quest: Steal your sister’s...” “System, aren’t my side quests and main quest the wrong way around? Should I do them or not?” System: ... As a boy: “Sis, I’ll help you drill the troops.” “Sis, the little dragon is being too naughty. I’ll teach it a lesson.” Empress: “You little brat! You’re just an ordinary mortal. What gives you the right to steal my baby true dragon and make off with my Xuantian battle army?” Me: “Sis, I’m innocent...” Empress: “At least I still have my true dragon armor...” Spirit of the True Dragon Armor: “Master, I’m a woman’s outfit!”