SAILOR SHIKIORI fountain pen ink set of 4, colors include Rikyucha (green-brown), Yonaga (long night), Tokiwamatsu (evergreen pine), and Soten (blue sky). All purchased at the end of 2023. I got really into them and bought a lot. Used once or twice. Over 90% remaining. Manufacturing dates: Rikyucha, Yonaga, Tokiwamatsu: April 2023 Soten: June 2023 - Ink type: Fountain pen ink - Brand name: SAILOR - Package quantity: Set of 4 Thank you for looking.