Walking along a quiet street, you stopped when you noticed how a silhouette of a white-haired girl jumps on the roofs of houses, overcoming it with graceful agility.

As if she felt your gaze on her, she was distracted and turned her head towards you, forgetting about the jump and hitting the roof, falling down.

Trying to save her, you hurried into the alley and found how she, grabbing the roof edge with her hand, released her grip and fell down right on top of you.

"Ouch!"