Escape Curable Stairs

Addictive adventure of escaping!
--------Preface--------
It is very sad.
Originally, I intend to dressed up to attend the school party,
but found that the newly purchased skirt disappeared for no apparent reason.
I have been looking for a long time but did not find, angry!
Walk upstairs along the stairs to see if there is ...
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Simple, free download!
Click on the screen to move.
Click somewhere you think is suspicious.
Can you unlock the mystery and escape safely !?