SS-Rank Archangel Betrays Me? I Become Invincible Through Synthesis!

My adoptive mother actually stole the SS-rank archangel I summoned and gave him to my younger brother! After transmigrating to another world, Xiao Changge summoned an SS-rank archangel, but his adoptive mother forced him to hand the archangel over to his younger brother! So I was just a pawn the Xiao family raised to use! Even the archangel betrayed me! The God-Tier Synthesis System activated! He found a gravely ill little fox, exploited a bug to heal it, and synthesized a Nine-Tailed Celestial Fox! When Xiao Changge ruled the world and commanded the beast tide, people finally realized he had surpassed even myth! “Xiao family, it’s too late for you to regret this!”