This is the 2386th most frequent Japanese word.
スト
"スト" is short for "ストライキ" (strike) and refers to a labor strike.
Here, "スト" is an abbreviation for "ストライキ" (strike), referring to a form of labor protest.
彼女はストに参加したいと言っています。
She says she wants to participate in the strike.
In this context, "スト" is short for "ストロール" (stroll), meaning a leisurely walk.
週末には素晴らしいストが私たちを待っている。
A fantastic stroll awaits us this weekend.
Here, "スト" is an abbreviation for "ストーリー" (story), indicating the narrative of the anime.