There were major localization changes made to this event or related vignettes.

Changed to “The Great Mousecapade – Teeny Tiny Tribulations” for EN, the original title included impossible-to-translate wordplay: Originally named “Little Big Adventure” (English-language words), the event’s subtitle is 「放課後ドタバタ暗チュウ模索」with the 中 of 暗中模索 (to try and figure things out/search blindly/etc.) written as チュウ to represent the sound that mice make.
When Ace and Deuce are speaking together outside of the school store their dialogue boxes have “???” where character names are usually displayed in the original game. On EN the name-box was left blank.
