Is This Even Reincarnation? ITER

Berlin has always been the golden child of their family. Smart, talented, and refined; he had all he needed in life but it all went down when he started hearing voices, chanting incoherent words. Thus he told his family those voices and soon regretted it when his family decided to abandon him inside the hospital for people with mental disabilities.

His emotions started to appear randomly. Sometimes he laughs, the next time he cries, and then get mad. He started talking to air like there was someone or something standing in front of him. His days inside the mental institution was hell and he had enough of it; he decided to end his life.

When he woke up, the only thing floating in his mind was, "Did I escaped from that institution or what?!"

Long story short, Berlin reincarnated as baby into another world without any regrets from his past life. While growing up, he started to notice his lack of emotion. Thus he decided to experience things that will make him feel happy and maybe uncover what the voices from his past life want.