Complex sentence: Due to his weakened state after being revived, Kaname transformed his body into a infant and suppressed his memories, entrusted his life in the hands of Haruka and Juri Kuran, who raised Kaname in the place of the son that Rido had taken and killed.
Split into simpler sentences: Due to his weakened state after being revived, Kaname had to transform his body to that of a infant and suppressed his memories. He entrusted his life into the hands of Haruka and Juri Kuran, who raised him in the place of the son that Rido had taken and killed.