|Air Date||May 2, 2016|
|Total Episode #||31|
|Previous||Act 29 - Infinity 3, Two New Soldiers|
|Next||Act 31 - Infinity 5, Sailor Pluto, Setsuna Meiou|
Mamoru and Usagi assist Chibiusa on her school project, 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.
Ami decides to take the test for the Mugen Academy, in order to meet Yui Bido, a student from the Academy whose grades always surpass her own. However, Yui, who is actually Viluy of the Witches 5, realizes that Ami is a Sailor and attacks her.
- Setsuna Meiou