Recently received my keychain in the mail. If anyone is interested they sell all 5 けいおんぶ (keionbu) on Etsy. Do take in to consideration they take about a month to arrive. :
Resin Glittering Letter Keychain, Color Stitching Stitching Flowing Soverell, Purple Drop Glue English Character Key Chain Christmas Garland Decorations Flower Strings Curtain - Walmart.com