Free Vending Machine x The Promised Neverland

Free Vending Machine x The Promised Neverland was a collaboration between The Promised Neverland and Free Vending Machine which was held in Ikebukuro, Japan on August 10, 2021. The collaboration included one 200ml plastic bottle per person filled with mineral water from Mt. Fuji. The wrapper wrapped around the bottle featured one of five characters from The Promised Neverland: Emma, Ray, Norman, Sonju, or Mujika. The water was advertised as "Ugo's Sea Anemone Water" - a reference to the sea anemones filled with water mentioned in Adventures of Ugo. Customers were also given a 44mm collectable bottle cap topper themed to the same character as their bottle.