No one left to visit the graves

Girls' Last Tour (Japanese: 少女終末旅行, Hepburn: Shōjo Shūmatsu Ryokō) is a Japanese manga series written and illustrated by Tsukumizu.
An anime television series adaptation by White Fox was announced by Kadokawa at Anime Expo 2017, with Takaharu Ozaki as director, Kazuyuki Fudeyasu in charge of series composition, and Mai Toda adapting the character designs for animation.
Episode 8 "Moonlight"

Back outdoors, the girls discover a strange place featuring tall black slabs filled with drawers. Yuuri finds a mysterious device and other seemingly meaningless objects inside them. Chito deduces that the drawers are graves containing the belongings of those who have died so they would be remembered.

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