3M Japan will sell a kitchen cleaner "Scotch-Brite Sumi Cleaner" from June 13th. The price is open with 2 pieces.
This product is a non-woven fabric sponge that can remove sticky stains, tea astringency, and dullness just by wetting it with water. It has a unique shape like a shuriken and has a lot of "kado", and it fits fine irregularities and is easy to wash.
The size is about 7 cm in diameter and about 5 mm thick. It can also be used in fluorinated pots and pans, but lacquer ware, plastics, and shiny metal products can be damaged.