Zero's Twin Bonds

In his previous life, he was born amid his parents' blood. Plagued by illness, he lived only sixteen short years. Kind and strong, he held on until the very end of his life, encouraged and cared for by countless doctors and nurses. Unexpectedly, he arrived in a place that was both familiar and strange, and even found himself with a family. Longing for a home, he wanted to follow that person's footsteps closely. Even though his body was still weak, even though that person disliked him, he guarded him without regret. Brother Zero, you're the first person I met in this world, and the most important person to me. I'll protect you even if it costs me my life. Dad Seven, thank you for caring for my brother and me. You're also one of the most important members of my family. All my uncles, Father of Ultra, Mother of Ultra, and King of Ultra, Saiyi will love you forever... Everyone, I'm back! O(∩_∩)O~... Theme: