The Merone Base is the hideout of the Millefiore Famiglia in Japan, connected to an underground shopping mall. It can be considered as a Box Weapon, because it is activated by Dying Will Flames from Rings.
By using the Activation characteristic of the Sun Flame, the vegetation in the space between each block grows and its strength is used for the base's operation, making this design ecologically friendly.
Future Lal Mirch, Tsunayoshi Sawada, Future Ryohei Sasagawa, Hayato Gokudera, and Takeshi Yamamoto infiltrated this location in search for the White Round Time Machine. Shoichi used the base's ability to split up their group and lead them into battling separately against Gamma, Genkishi, Spanner, Iris Hepburn, and Baishana.