Looking down the stairs, you realize that Jackie was not alone.
Just so you can get some perspective on this scene, the Japanese flag is 10' x 6', and Haruka Tenou (A.K.A. Sailor Uranus) is approximately 6 feet tall.
...and you wouldn't believe the difficulty required in doing this without a decent ladder. We at Greenwood thank our phantom resident, (Fire) Bomber, for his daring and courage to overcome fear of death for the sake of interior decoration.
From here you can head downstairs, or try the doors again.