October 23, 2023 Amy Shulke Ohuhu Marker, Ohuhu Swatch, Ohuhu Test RV070 Sakura Pink: Testing Ohuhu Markers for Lightfastness and Quality October 23, 2023 Amy Shulke Ohuhu Marker, Ohuhu Swatch, Ohuhu Test RV070 Sakura Pink - OhuhuLet’s take a closer look at this Ohuhu Marker and its ink characteristics.