It appears that the cat and the alien have started ghost busting. Side story.

This is a daily story about Osamu Okada, a high school student who can easily come back to life even if he dies. It started one evening when the cat-eared boys and girls that Osamu keeps as pets said, "We want to cook for big brother," leading to a tragic comedy. This is a side story of "It Seems Cats and Aliens Have Started a Ghostbusters Business." I think you can enjoy it plenty without watching the main story. However, if you watch the main story, you'll be able to enjoy it even more.