I Reincarnated Shiinya Kazuya, a Japanese teenager, is killed saving two girls and finds himself reincarnated in another world as Cain von Silford, the 3 year old son of a noble family with his memories intact. While struggling to understand and adjust to his new surroundings, he meets his father Garm, mother Sarah, maid Silvia, and older sister Reine. He also meets Garm's first wife, Maria, and much older half-brothers, Djinn and Alec...