土萌螢
Michiru's violin, a Stradivarius worth some five million dollars, is called the Marine Cathédrale and is named after "the temple of the sea". Aside from playing it in concert, she uses it in her third and final attack, which (like the instrument itself) has a French-inspired name: . This third attack is only used in the manga, and was never shown in the anime. This attack is also used by the evil Sailor Neptune in Act 50, where it is renamed "Galactica Violon Tide". The Neptune Crystal is perhaps her most important possession, as it is her Sailor Crystal and the source of all her power, which becomes especially important in the fifth story arc. It is given to her by Sailor Saturn.