Meaning & History
Sachi means "Bliss" and O means "Hero,Manly" or "Son" with different kanji. Notable bearers are Sachio Kinugasa, a former footballer, Sachio Sakai, who was an actor, and there are many other Sachio's out there. If this is used for girls, it's uncommon. Unless you count "Sachiyo", which is pronounced the same way.