Draw Near, Stop By, Send
Under this roof someone odd is trying to draw near to you. You back up, but they continue to draw near anyway.
Imagine being under the same roof as an odd person who's always trying to draw near to you. You don't want anything to do with them, but they won't back off.
き
よ
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They continue to draw near until you can't take it anymore. You run out from under the roof, slam the door closed, and lock it with a key (き).
You hold the key tightly in your hand and press your ear to the door. You can still hear the odd person drawing near. Hopefully this key keeps them away.