Fukagawa Seiji porcelain sake set deep dark blue swirls 7 pc set

I believe this is a Fukagawa Seiji porcelain, identifiable by the "Fukagawa blue" mark, which is a characteristic of this Japanese porcelain brand. Here's some information about Fukagawa porcelain: Origin and History: Fukagawa porcelain is produced in the Arita region of Japan, with a history dating back to the 17th century. The modern Fukagawa company was founded in 1894 by Chuji Fukagawa. & Distinctive Features: Fukagawa Seiji porcelain is known for its beautiful "translucent white porcelain" achieved through unique technology, and its vivid "Fukagawa blue" color, which is carefully hand-painted. There are two saki pictures. One of them has a hole and cracks. It has been repaired. There are five little saggy cups. Excellent condition. Everything else is immaculate beautiful deep dark blue color.