キャラクターを逆転する機能？ Add a feature to flip a character?

[birtles]

Big Bang Fairのフィードバック：
「時々キャラを壁に送ると逆方向に動いていた。」

It seems like maybe the user has drawn a character walking in one direction but when they post it on the wall it goes in the opposite direction to their expectation. Perhaps we could add a function to reverse the direction of the character before sending? (Or even after sending?)