Etymology and distribution of サイエット.

Saietto* 【サイエット】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Toukyou-to Katsushika-ku . Korean type . Originated in Sunjeong city, South Jeolla Province. "Ordinary sky" is meaningful. Toukyou-to Katsushika-ku was in 1997 with a name. Last name is cheap. 安 Yasu reference.