edit_summary: /* Neo-Queen Serenity */
diff.text: [[File:9926_103134113031447_100000045758141_86528_7000745_n.jpg|thumb|Neo Queen Serenity]]
diff.text: During the second major [[Sailor Moon R|story arc]], it is revealed that Usagi, as Serenity, will eventually become the [[queen regnant]] of a new Silver Millennium called Crystal Tokyo, which will already exist in the 30th century. She is first seen in this future form in Act 16 of the manga and Episode 68 of the anime. Usagi learns that she will be given the title "Sovereign of Earth," and Mamoru will become King Endymion alongside her. It is stated in the anime that she becomes Neo-Queen Serenity after warding off a second Ice Age, though the specifics of this are never discussed. This incarnation is shown to be more mature than the present day Usagi, though she still has her moments—in Episode 104, Chibi-usa gives the Senshi a letter from the future, in which the Queen asks them to train her—the letter is simplistic and contains almost no [[kanji]]. Also, in Episode 146, Diana says that the King and Queen sometimes play sick to get out of things. Letters she sends though the Door of Space-Time to Chibi-usa are sometimes signed with a drawing of herself (and sometimes King Endymion) instead of a name.