A Couple Clucking Chickens Were Still Kickin' in the Schoolyard

It is 2019 and aliens have nearly annihilated the human race with their powerful abilities to transform. As humanity faces extinction, the aliens settle on Earth and even fully embrace human culture by living like humans once did. Today, it is alien student Yohei's turn to feed the two chickens kept at his school. However, unbeknownst to him, those two chickens are hiding a surprising secret.