Bougyaku no Kokekko

Yuu Enji, who was abandoned by his father, lives in an orphanage and is frustrated with the adults around him, especially the self-centered principal. He dreams of buying the orphanage to create a better life for everyone. To work toward this, he decides to get a job and attends his high school graduation. However, after that day, the world changes abruptly—adults transform into giant chickens that attack children. Yuu must find a way to protect the children in this new reality. The story includes additional content labeled 10.5 Egg and 20.5 Pure Human.