A free-forming cute little body crying "Kyuu! Kyuu!" This is the story of your encounter with "Stella"... on the day of your friend's funeral. You choose to keep Stella as a memento, not knowing that this triggers your days being chased by a group of adults.

Why are they chasing Stella?
What is Stella?
And why did my friend die...?

The truth will bring you the largest shock and warmth you'll ever find. With the power of your four best friends, can you protect Stella? An unexpecting youth story, with an unidentified creature...