Episode Title:Infinity 4 Sailor Uranus, Haruka Tenoh; Sailor Neptune, Michiru Kaioh.Episode Description:Usagi and the others question Sailors Uranus and Neptune about their objectives, only for Uranus to explain that they are not her allies as they attack the Sailor Guardians before leaving. Luna reveals that the two of them were solitary Sailor Guardians who were assigned to protect Silver Millennium from afar and that they were not supposed to interact with them. Mamoru and Usagi assist Chibiusa on her school project, which is a replica of the "Legendary Holy Grail". After the replica is completed, Usagi and Mamoru both confess to feelings of jealousy regarding their interactions with Haruka and Michiru and reconcile. Some time later, Ami decides to take the test for the Mugen Preparatory School in order to meet Yui Bido, a genius Mugen Academy prefect who is actually Viluy of the Witches 5, attacking Ami upon realizing she is a Sailor Guardian. Ami is joined by her friends, but their fight is interrupted by Haruka and Michiru. Haruka reveals her talisman, the Space Sword, and uses it to finish Viluy. Meanwhile, at Motoki and Reika's university, a physics student resembling Sailor Pluto appears and introduces herself as Setsuna Meioh.