Bishoujo Senshi Sailor Moon SuperS Gaiden: Ami-chan no Hatsukoi
English name: Sailor Moon SuperS Plus: Ami's First Love
Genres: Comedy, Romance
Type: Special, Episodes: 1
Aired: Dec 23, 1995
Studio: Toei Animation
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Quiet bookworm of the Sailor Senshi Ami takes pride in her studies, but a rival naming himself "Mercurius" is suddenly outscoring her on the national exams. Combine this with a sudden love letter and a youma feeding on Ami's stress over the whole situation, and Sailor Mercury finds herself in a huge pinch. 

(Source: ANN)